115857522537 has 16 divisors (see below), whose sum is σ = 158320957440. Its totient is φ = 75327833232.

The previous prime is 115857522533. The next prime is 115857522563. The reversal of 115857522537 is 735225758511.

It is not a de Polignac number, because 115857522537 - 2² = 115857522533 is a prime.

It is a super-2 number, since 2×115857522537² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115857522537.

It is not an unprimeable number, because it can be changed into a prime (115857522533) 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, 1411837 + ... + 1491642.

It is an arithmetic number, because the mean of its divisors is an integer number (9895059840).

Almost surely, 2^115857522537 is an apocalyptic number.

It is an amenable number.

115857522537 is a deficient number, since it is larger than the sum of its proper divisors (42463434903).

115857522537 is a wasteful number, since it uses less digits than its factorization.

115857522537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903812.

The product of its digits is 2940000, while the sum is 51.

The spelling of 115857522537 in words is "one hundred fifteen billion, eight hundred fifty-seven million, five hundred twenty-two thousand, five hundred thirty-seven".