72477521576 has 32 divisors (see below), whose sum is σ = 136768020480. Its totient is φ = 36006408000.

The previous prime is 72477521527. The next prime is 72477521603. The reversal of 72477521576 is 67512577427.

It is a super-2 number, since 2×72477521576² (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 in 7 ways as a sum of consecutive naturals, for example, 1644905 + ... + 1688391.

It is an arithmetic number, because the mean of its divisors is an integer number (4274000640).

Almost surely, 2^72477521576 is an apocalyptic number.

It is an amenable number.

72477521576 is a deficient number, since it is larger than the sum of its proper divisors (64290498904).

72477521576 is a wasteful number, since it uses less digits than its factorization.

72477521576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44825 (or 44821 counting only the distinct ones).

The product of its digits is 5762400, while the sum is 53.

The spelling of 72477521576 in words is "seventy-two billion, four hundred seventy-seven million, five hundred twenty-one thousand, five hundred seventy-six".