72031996332 has 48 divisors (see below), whose sum is σ = 186765224800. Its totient is φ = 24008659200.

The previous prime is 72031996331. The next prime is 72031996343. The reversal of 72031996332 is 23369913027.

72031996332 is a `hidden beast` number, since 7 + 2 + 0 + 3 + 1 + 9 + 9 + 633 + 2 = 666.

It is a super-2 number, since 2×72031996332² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72031996331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860144 + ... + 1898472.

Almost surely, 2^72031996332 is an apocalyptic number.

It is an amenable number.

72031996332 is an abundant number, since it is smaller than the sum of its proper divisors (114733228468).

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

72031996332 is a wasteful number, since it uses less digits than its factorization.

72031996332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55743 (or 55735 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 45.

The spelling of 72031996332 in words is "seventy-two billion, thirty-one million, nine hundred ninety-six thousand, three hundred thirty-two".