72331452944 has 40 divisors (see below), whose sum is σ = 147538562880. Its totient is φ = 34257513600.

The previous prime is 72331452943. The next prime is 72331452953. The reversal of 72331452944 is 44925413327.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72331452895 and 72331452904.

It is not an unprimeable number, because it can be changed into a prime (72331452943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3220634 + ... + 3243014.

It is an arithmetic number, because the mean of its divisors is an integer number (3688464072).

Almost surely, 2^72331452944 is an apocalyptic number.

It is an amenable number.

72331452944 is an abundant number, since it is smaller than the sum of its proper divisors (75207109936).

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

72331452944 is a wasteful number, since it uses less digits than its factorization.

72331452944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33039 (or 33033 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The spelling of 72331452944 in words is "seventy-two billion, three hundred thirty-one million, four hundred fifty-two thousand, nine hundred forty-four".