115166057217 has 16 divisors (see below), whose sum is σ = 164561608320. Its totient is φ = 71454379392.

The previous prime is 115166057183. The next prime is 115166057239. The reversal of 115166057217 is 712750661511.

It is not a de Polignac number, because 115166057217 - 2²² = 115161862913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115166057257) 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, 22552492 + ... + 22557597.

It is an arithmetic number, because the mean of its divisors is an integer number (10285100520).

Almost surely, 2^115166057217 is an apocalyptic number.

It is an amenable number.

115166057217 is a deficient number, since it is larger than the sum of its proper divisors (49395551103).

115166057217 is a wasteful number, since it uses less digits than its factorization.

115166057217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45110152.

The product of its (nonzero) digits is 88200, while the sum is 42.

The spelling of 115166057217 in words is "one hundred fifteen billion, one hundred sixty-six million, fifty-seven thousand, two hundred seventeen".