131715210780520 has 32 divisors (see below), whose sum is σ = 297452800753920. Its totient is φ = 52491670712640.

The previous prime is 131715210780499. The next prime is 131715210780521. The reversal of 131715210780520 is 25087012517131.

It is a super-2 number, since 2×131715210780520² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131715210780521) 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, 6075414012 + ... + 6075435691.

It is an arithmetic number, because the mean of its divisors is an integer number (9295400023560).

Almost surely, 2^{131715210780520} is an apocalyptic number.

131715210780520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131715210780520 is an abundant number, since it is smaller than the sum of its proper divisors (165737589973400).

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

131715210780520 is a wasteful number, since it uses less digits than its factorization.

131715210780520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12150849985 (or 12150849981 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 43.

The spelling of 131715210780520 in words is "one hundred thirty-one trillion, seven hundred fifteen billion, two hundred ten million, seven hundred eighty thousand, five hundred twenty".