115657172170 has 16 divisors (see below), whose sum is σ = 208440258120. Its totient is φ = 46205680384.

The previous prime is 115657172161. The next prime is 115657172171. The reversal of 115657172170 is 71271756511.

It can be written as a sum of positive squares in 4 ways, for example, as 105164652681 + 10492519489 = 324291^2 + 102433^2 .

It is a super-2 number, since 2×115657172170² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115657172171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7140067 + ... + 7156246.

Almost surely, 2^115657172170 is an apocalyptic number.

115657172170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115657172170 is a deficient number, since it is larger than the sum of its proper divisors (92783085950).

115657172170 is a wasteful number, since it uses less digits than its factorization.

115657172170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14297129.

The product of its (nonzero) digits is 102900, while the sum is 43.

The spelling of 115657172170 in words is "one hundred fifteen billion, six hundred fifty-seven million, one hundred seventy-two thousand, one hundred seventy".