157216677631 has 6 divisors (see below), whose sum is σ = 170240544600. Its totient is φ = 145123086888.

The previous prime is 157216677623. The next prime is 157216677643. The reversal of 157216677631 is 136776612751.

It is not a de Polignac number, because 157216677631 - 2³ = 157216677623 is a prime.

It is a super-2 number, since 2×157216677631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157216677691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 465137931 + ... + 465138268.

It is an arithmetic number, because the mean of its divisors is an integer number (28373424100).

Almost surely, 2^157216677631 is an apocalyptic number.

157216677631 is a deficient number, since it is larger than the sum of its proper divisors (13023866969).

157216677631 is an equidigital number, since it uses as much as digits as its factorization.

157216677631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930276225 (or 930276212 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 52.

The spelling of 157216677631 in words is "one hundred fifty-seven billion, two hundred sixteen million, six hundred seventy-seven thousand, six hundred thirty-one".