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13012653280 = 2551153139501
BaseRepresentation
bin11000001111001110…
…10101010011100000
31020120212121021111111
430013213111103200
5203122214401110
65551122153104
7640315504444
oct140747252340
936525537444
1013012653280
115578338010
122631ab2794
1312c4bb2153
148b6300824
15512600e8a
hex3079d54e0

13012653280 has 96 divisors (see below), whose sum is σ = 34170177888. Its totient is φ = 4642560000.

The previous prime is 13012653257. The next prime is 13012653287. The reversal of 13012653280 is 8235621031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012653287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23530 + ... + 163030.

It is an arithmetic number, because the mean of its divisors is an integer number (355939353).

Almost surely, 213012653280 is an apocalyptic number.

13012653280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13012653280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17085088944).

13012653280 is an abundant number, since it is smaller than the sum of its proper divisors (21157524608).

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

13012653280 is a wasteful number, since it uses less digits than its factorization.

13012653280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139580 (or 139572 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 13012653280 in words is "thirteen billion, twelve million, six hundred fifty-three thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 53 55 80 88 106 110 160 176 212 220 265 352 424 440 530 583 848 880 1060 1166 1696 1760 2120 2332 2915 4240 4664 5830 8480 9328 11660 18656 23320 46640 93280 139501 279002 558004 697505 1116008 1395010 1534511 2232016 2790020 3069022 4464032 5580040 6138044 7393553 7672555 11160080 12276088 14787106 15345110 22320160 24552176 29574212 30690220 36967765 49104352 59148424 61380440 73935530 81329083 118296848 122760880 147871060 162658166 236593696 245521760 295742120 325316332 406645415 591484240 650632664 813290830 1182968480 1301265328 1626581660 2602530656 3253163320 6506326640 13012653280