72913085920 has 48 divisors (see below), whose sum is σ = 173354404608. Its totient is φ = 28979458560.

The previous prime is 72913085873. The next prime is 72913085929. The reversal of 72913085920 is 2958031927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72913085929) 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, 1426176 + ... + 1476415.

It is an arithmetic number, because the mean of its divisors is an integer number (3611550096).

Almost surely, 2^72913085920 is an apocalyptic number.

It is an amenable number.

72913085920 is an abundant number, since it is smaller than the sum of its proper divisors (100441318688).

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

72913085920 is a wasteful number, since it uses less digits than its factorization.

72913085920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902763 (or 2902755 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 72913085920 in words is "seventy-two billion, nine hundred thirteen million, eighty-five thousand, nine hundred twenty".