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23137290155 = 5721033892357
BaseRepresentation
bin10101100011000101…
…110000011110101011
32012201110220010021102
4111203011300132223
5334341121241110
614343520232015
71446235502300
oct254305603653
965643803242
1023137290155
1198a3440601
12459876b60b
13224965ac45
141196c290a7
159063cd5a5
hex5631707ab

23137290155 has 48 divisors (see below), whose sum is σ = 32709044160. Its totient is φ = 15664497408.

The previous prime is 23137290133. The next prime is 23137290157. The reversal of 23137290155 is 55109273132.

It is a happy number.

It is not a de Polignac number, because 23137290155 - 26 = 23137290091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23137290157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9815237 + ... + 9817593.

It is an arithmetic number, because the mean of its divisors is an integer number (681438420).

Almost surely, 223137290155 is an apocalyptic number.

23137290155 is a deficient number, since it is larger than the sum of its proper divisors (9571754005).

23137290155 is a wasteful number, since it uses less digits than its factorization.

23137290155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868 (or 2861 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The spelling of 23137290155 in words is "twenty-three billion, one hundred thirty-seven million, two hundred ninety thousand, one hundred fifty-five".

Divisors: 1 5 7 35 49 103 245 389 515 721 1945 2357 2723 3605 5047 11785 13615 16499 19061 25235 40067 82495 95305 115493 200335 242771 280469 577465 916873 1213855 1402345 1699397 1963283 4584365 6418111 8496985 9816415 11895779 32090555 44926777 59478895 94437919 224633885 472189595 661065433 3305327165 4627458031 23137290155