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10115706257 = 83121875979
BaseRepresentation
bin10010110101111000…
…10110110110010001
3222002222111010021022
421122330112312101
5131204110100012
64351434405225
7505451040656
oct113274266621
928088433238
1010115706257
114321063918
121b63890815
13c5296cc07
146bd681c2d
153e3116472
hex25af16d91

10115706257 has 4 divisors (see below), whose sum is σ = 10237582320. Its totient is φ = 9993830196.

The previous prime is 10115706247. The next prime is 10115706301. The reversal of 10115706257 is 75260751101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10115706257 - 24 = 10115706241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10115706247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60937907 + ... + 60938072.

It is an arithmetic number, because the mean of its divisors is an integer number (2559395580).

Almost surely, 210115706257 is an apocalyptic number.

It is an amenable number.

10115706257 is a deficient number, since it is larger than the sum of its proper divisors (121876063).

10115706257 is an equidigital number, since it uses as much as digits as its factorization.

10115706257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121876062.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 10115706257 in words is "ten billion, one hundred fifteen million, seven hundred six thousand, two hundred fifty-seven".

Divisors: 1 83 121875979 10115706257