115707271681 has 4 divisors (see below), whose sum is σ = 116353681200. Its totient is φ = 115060862164.

The previous prime is 115707271639. The next prime is 115707271699. The reversal of 115707271681 is 186172707511.

It is a happy number.

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 115707271681 - 2³⁵ = 81347533313 is a prime.

It is a super-2 number, since 2×115707271681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115701271681) 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, 323204491 + ... + 323204848.

It is an arithmetic number, because the mean of its divisors is an integer number (29088420300).

Almost surely, 2^115707271681 is an apocalyptic number.

It is an amenable number.

115707271681 is a deficient number, since it is larger than the sum of its proper divisors (646409519).

115707271681 is an equidigital number, since it uses as much as digits as its factorization.

115707271681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646409518.

The product of its (nonzero) digits is 164640, while the sum is 46.

The spelling of 115707271681 in words is "one hundred fifteen billion, seven hundred seven million, two hundred seventy-one thousand, six hundred eighty-one".