131129777904 has 40 divisors (see below), whose sum is σ = 338829063552. Its totient is φ = 43699972800.

The previous prime is 131129777903. The next prime is 131129777927. The reversal of 131129777904 is 409777921131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131129777903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96522 + ... + 521129.

Almost surely, 2^131129777904 is an apocalyptic number.

It is an amenable number.

131129777904 is an abundant number, since it is smaller than the sum of its proper divisors (207699285648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131129777904 is a wasteful number, since it uses less digits than its factorization.

131129777904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622085 (or 622079 counting only the distinct ones).

The product of its (nonzero) digits is 666792, while the sum is 51.

The spelling of 131129777904 in words is "one hundred thirty-one billion, one hundred twenty-nine million, seven hundred seventy-seven thousand, nine hundred four".