72970912920 has 32 divisors (see below), whose sum is σ = 218912739120. Its totient is φ = 19458910080.

The previous prime is 72970912879. The next prime is 72970912921. The reversal of 72970912920 is 2921907927.

It is a self number, because there is not a number n which added to its sum of digits gives 72970912920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72970912921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304045351 + ... + 304045590.

Almost surely, 2^72970912920 is an apocalyptic number.

It is an amenable number.

72970912920 is an abundant number, since it is smaller than the sum of its proper divisors (145941826200).

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

72970912920 is a wasteful number, since it uses less digits than its factorization.

72970912920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608090955 (or 608090951 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The spelling of 72970912920 in words is "seventy-two billion, nine hundred seventy million, nine hundred twelve thousand, nine hundred twenty".