131915012456 has 8 divisors (see below), whose sum is σ = 247340648370. Its totient is φ = 65957506224.

The previous prime is 131915012401. The next prime is 131915012497. The reversal of 131915012456 is 654210519131.

It can be written as a sum of positive squares in only one way, i.e., 120988491556 + 10926520900 = 347834^2 + 104530^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×131915012456² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8244688271 + ... + 8244688286.

Almost surely, 2^131915012456 is an apocalyptic number.

It is an amenable number.

131915012456 is a deficient number, since it is larger than the sum of its proper divisors (115425635914).

131915012456 is a wasteful number, since it uses less digits than its factorization.

131915012456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16489376563 (or 16489376559 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 131915012456 in words is "one hundred thirty-one billion, nine hundred fifteen million, twelve thousand, four hundred fifty-six".