136731291320 has 64 divisors (see below), whose sum is σ = 331394595840. Its totient is φ = 50472576000.

The previous prime is 136731291311. The next prime is 136731291331. The reversal of 136731291320 is 23192137631.

It is a congruent number.

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, 2153225 + ... + 2215815.

It is an arithmetic number, because the mean of its divisors is an integer number (5178040560).

Almost surely, 2^136731291320 is an apocalyptic number.

136731291320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136731291320 is an abundant number, since it is smaller than the sum of its proper divisors (194663304520).

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

136731291320 is a wasteful number, since it uses less digits than its factorization.

136731291320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66816 (or 66812 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The spelling of 136731291320 in words is "one hundred thirty-six billion, seven hundred thirty-one million, two hundred ninety-one thousand, three hundred twenty".