131778772672516 has 48 divisors (see below), whose sum is σ = 244269581774400. Its totient is φ = 61990364233728.

The previous prime is 131778772672493. The next prime is 131778772672583. The reversal of 131778772672516 is 615276277877131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5486426755 + ... + 5486450773.

It is an arithmetic number, because the mean of its divisors is an integer number (5088949620300).

Almost surely, 2^{131778772672516} is an apocalyptic number.

It is an amenable number.

131778772672516 is a deficient number, since it is larger than the sum of its proper divisors (112490809101884).

131778772672516 is a wasteful number, since it uses less digits than its factorization.

131778772672516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50836 (or 50834 counting only the distinct ones).

The product of its digits is 290424960, while the sum is 70.

The spelling of 131778772672516 in words is "one hundred thirty-one trillion, seven hundred seventy-eight billion, seven hundred seventy-two million, six hundred seventy-two thousand, five hundred sixteen".