115657622217 has 12 divisors (see below), whose sum is σ = 167128486980. Its totient is φ = 77073938208.

The previous prime is 115657622177. The next prime is 115657622239. The reversal of 115657622217 is 712226756511.

115657622217 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 5 + 7 + 622 + 2 + 17 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47321911296 + 68335710921 = 217536^2 + 261411^2 .

It is not a de Polignac number, because 115657622217 - 2²² = 115653427913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115657622287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2571742 + ... + 2616327.

It is an arithmetic number, because the mean of its divisors is an integer number (13927373915).

Almost surely, 2^115657622217 is an apocalyptic number.

It is an amenable number.

115657622217 is a deficient number, since it is larger than the sum of its proper divisors (51470864763).

115657622217 is a wasteful number, since it uses less digits than its factorization.

115657622217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5190552 (or 5190549 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The spelling of 115657622217 in words is "one hundred fifteen billion, six hundred fifty-seven million, six hundred twenty-two thousand, two hundred seventeen".