72532903524 has 48 divisors (see below), whose sum is σ = 172236687168. Its totient is φ = 23753668608.

The previous prime is 72532903507. The next prime is 72532903537. The reversal of 72532903524 is 42530923527.

It is a happy number.

It is a super-2 number, since 2×72532903524² (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 15 ways as a sum of consecutive naturals, for example, 67954 + ... + 386889.

It is an arithmetic number, because the mean of its divisors is an integer number (3588264316).

Almost surely, 2^72532903524 is an apocalyptic number.

It is an amenable number.

72532903524 is an abundant number, since it is smaller than the sum of its proper divisors (99703783644).

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

72532903524 is a wasteful number, since it uses less digits than its factorization.

72532903524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455084 (or 455082 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 72532903524 in words is "seventy-two billion, five hundred thirty-two million, nine hundred three thousand, five hundred twenty-four".