72971808960 has 112 divisors (see below), whose sum is σ = 236615118336. Its totient is φ = 19045112832.

The previous prime is 72971808929. The next prime is 72971808983. The reversal of 72971808960 is 6980817927.

It is a self number, because there is not a number n which added to its sum of digits gives 72971808960.

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, 763522 + ... + 853761.

Almost surely, 2^72971808960 is an apocalyptic number.

It is an amenable number.

72971808960 is an abundant number, since it is smaller than the sum of its proper divisors (163643309376).

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

72971808960 is a wasteful number, since it uses less digits than its factorization.

72971808960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617350 (or 1617340 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 72971808960 in words is "seventy-two billion, nine hundred seventy-one million, eight hundred eight thousand, nine hundred sixty".