131661524436456 has 64 divisors (see below), whose sum is σ = 376177633574400. Its totient is φ = 37617393463488.

The previous prime is 131661524436389. The next prime is 131661524436503. The reversal of 131661524436456 is 654634425166131.

It is a junction number, because it is equal to n+sod(n) for n = 131661524436396 and 131661524436405.

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, 34375615 + ... + 38013233.

It is an arithmetic number, because the mean of its divisors is an integer number (5877775524600).

Almost surely, 2^{131661524436456} is an apocalyptic number.

It is an amenable number.

131661524436456 is an abundant number, since it is smaller than the sum of its proper divisors (244516109137944).

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

131661524436456 is a wasteful number, since it uses less digits than its factorization.

131661524436456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853078 (or 3853074 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 57.

The spelling of 131661524436456 in words is "one hundred thirty-one trillion, six hundred sixty-one billion, five hundred twenty-four million, four hundred thirty-six thousand, four hundred fifty-six".