157177156931 has 4 divisors (see below), whose sum is σ = 159841176600. Its totient is φ = 154513137264.

The previous prime is 157177156901. The next prime is 157177156951. The reversal of 157177156931 is 139651771751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157177156931 - 2³⁴ = 139997287747 is a prime.

It is a super-2 number, since 2×157177156931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157177156901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332009746 + ... + 1332009863.

It is an arithmetic number, because the mean of its divisors is an integer number (39960294150).

Almost surely, 2^157177156931 is an apocalyptic number.

157177156931 is a deficient number, since it is larger than the sum of its proper divisors (2664019669).

157177156931 is an equidigital number, since it uses as much as digits as its factorization.

157177156931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664019668.

The product of its digits is 1389150, while the sum is 53.

The spelling of 157177156931 in words is "one hundred fifty-seven billion, one hundred seventy-seven million, one hundred fifty-six thousand, nine hundred thirty-one".