72647445120 has 64 divisors (see below), whose sum is σ = 231563737440. Its totient is φ = 19372651520.

The previous prime is 72647445107. The next prime is 72647445137. The reversal of 72647445120 is 2154474627.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18916686 + ... + 18920525.

Almost surely, 2^72647445120 is an apocalyptic number.

It is an amenable number.

72647445120 is an abundant number, since it is smaller than the sum of its proper divisors (158916292320).

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

72647445120 is a wasteful number, since it uses less digits than its factorization.

72647445120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37837233 (or 37837221 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 72647445120 in words is "seventy-two billion, six hundred forty-seven million, four hundred forty-five thousand, one hundred twenty".