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80738972370 = 233573871817
BaseRepresentation
bin100101100110001101…
…0101111001011010010
321201101211121202112000
41023030122233023102
52310323134103440
6101031352214430
75555533641000
oct1131432571322
9251354552460
1080738972370
1131272054a51
121379339a416
1377c926b084
143c9cd79a70
1521782dd730
hex12cc6af2d2

80738972370 has 128 divisors (see below), whose sum is σ = 251083584000. Its totient is φ = 18454601088.

The previous prime is 80738972359. The next prime is 80738972387. The reversal of 80738972370 is 7327983708.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 343299 + ... + 528518.

It is an arithmetic number, because the mean of its divisors is an integer number (1961590500).

Almost surely, 280738972370 is an apocalyptic number.

80738972370 is an abundant number, since it is smaller than the sum of its proper divisors (170344611630).

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

80738972370 is a wasteful number, since it uses less digits than its factorization.

80738972370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871854 (or 871834 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 80738972370 in words is "eighty billion, seven hundred thirty-eight million, nine hundred seventy-two thousand, three hundred seventy".

Divisors: 1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 49 54 63 70 90 98 105 126 135 147 189 210 245 270 294 315 343 378 441 490 630 686 735 882 945 1029 1323 1470 1715 1890 2058 2205 2646 3087 3430 4410 5145 6174 6615 9261 10290 13230 15435 18522 30870 46305 92610 871817 1743634 2615451 4359085 5230902 6102719 7846353 8718170 12205438 13077255 15692706 18308157 23539059 26154510 30513595 36616314 39231765 42719033 47078118 54924471 61027190 78463530 85438066 91540785 109848942 117695295 128157099 164773413 183081570 213595165 235390590 256314198 274622355 299033231 329546826 384471297 427190330 549244710 598066462 640785495 768942594 823867065 897099693 1153413891 1281570990 1495166155 1647734130 1794199386 1922356485 2306827782 2691299079 2990332310 3844712970 4485498465 5382598158 5767069455 8073897237 8970996930 11534138910 13456495395 16147794474 26912990790 40369486185 80738972370