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51180761088 = 2123551421
BaseRepresentation
bin101111101010100111…
…000111000000000000
311220002212122001100000
4233222213013000000
51314304233323323
635302341200000
73461210201622
oct575247070000
9156085561300
1051180761088
111a784229366
129b04400000
134a98589322
142697492c12
1514e837ee43
hexbea9c7000

51180761088 has 156 divisors (see below), whose sum is σ = 153315927128. Its totient is φ = 17059921920.

The previous prime is 51180761077. The next prime is 51180761089. The reversal of 51180761088 is 88016708115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51180761089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 969618 + ... + 1021038.

Almost surely, 251180761088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51180761088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76657963564).

51180761088 is an abundant number, since it is smaller than the sum of its proper divisors (102135166040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51180761088 is an frugal number, since it uses more digits than its factorization.

51180761088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51460 (or 51426 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 45.

The spelling of 51180761088 in words is "fifty-one billion, one hundred eighty million, seven hundred sixty-one thousand, eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 81 96 108 128 144 162 192 216 243 256 288 324 384 432 486 512 576 648 768 864 972 1024 1152 1296 1536 1728 1944 2048 2304 2592 3072 3456 3888 4096 4608 5184 6144 6912 7776 9216 10368 12288 13824 15552 18432 20736 27648 31104 36864 41472 51421 55296 62208 82944 102842 110592 124416 154263 165888 205684 248832 308526 331776 411368 462789 497664 617052 822736 925578 995328 1234104 1388367 1645472 1851156 2468208 2776734 3290944 3702312 4165101 4936416 5553468 6581888 7404624 8330202 9872832 11106936 12495303 13163776 14809248 16660404 19745664 22213872 24990606 26327552 29618496 33320808 39491328 44427744 49981212 52655104 59236992 66641616 78982656 88855488 99962424 105310208 118473984 133283232 157965312 177710976 199924848 210620416 236947968 266566464 315930624 355421952 399849696 473895936 533132928 631861248 710843904 799699392 947791872 1066265856 1421687808 1599398784 1895583744 2132531712 2843375616 3198797568 4265063424 5686751232 6397595136 8530126848 12795190272 17060253696 25590380544 51180761088