115707217251 has 16 divisors (see below), whose sum is σ = 154788641280. Its totient is φ = 76882328160.

The previous prime is 115707217237. The next prime is 115707217253. The reversal of 115707217251 is 152712707511.

It is not a de Polignac number, because 115707217251 - 2¹⁸ = 115706955107 is a prime.

It is a super-2 number, since 2×115707217251² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115707217253) 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, 1265640 + ... + 1353978.

It is an arithmetic number, because the mean of its divisors is an integer number (9674290080).

Almost surely, 2^115707217251 is an apocalyptic number.

115707217251 is a deficient number, since it is larger than the sum of its proper divisors (39081424029).

115707217251 is a wasteful number, since it uses less digits than its factorization.

115707217251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89786.

The product of its (nonzero) digits is 34300, while the sum is 39.

The spelling of 115707217251 in words is "one hundred fifteen billion, seven hundred seven million, two hundred seventeen thousand, two hundred fifty-one".