131660266564 has 12 divisors (see below), whose sum is σ = 230521087804. Its totient is φ = 65797098624.

The previous prime is 131660266559. The next prime is 131660266589. The reversal of 131660266564 is 465662066131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 102893392900 + 28766873664 = 320770^2 + 169608^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8249697 + ... + 8265640.

Almost surely, 2^131660266564 is an apocalyptic number.

It is an amenable number.

131660266564 is a deficient number, since it is larger than the sum of its proper divisors (98860821240).

131660266564 is a wasteful number, since it uses less digits than its factorization.

131660266564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16517334 (or 16517332 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 131660266564 in words is "one hundred thirty-one billion, six hundred sixty million, two hundred sixty-six thousand, five hundred sixty-four".