131572721584 has 40 divisors (see below), whose sum is σ = 257240142720. Its totient is φ = 65188451328.

The previous prime is 131572721551. The next prime is 131572721591. The reversal of 131572721584 is 485127275131.

It is a super-2 number, since 2×131572721584² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12124449 + ... + 12135295.

It is an arithmetic number, because the mean of its divisors is an integer number (6431003568).

Almost surely, 2^131572721584 is an apocalyptic number.

It is an amenable number.

131572721584 is a deficient number, since it is larger than the sum of its proper divisors (125667421136).

131572721584 is a wasteful number, since it uses less digits than its factorization.

131572721584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17677 (or 17671 counting only the distinct ones).

The product of its digits is 470400, while the sum is 46.

The spelling of 131572721584 in words is "one hundred thirty-one billion, five hundred seventy-two million, seven hundred twenty-one thousand, five hundred eighty-four".