72470773100 has 36 divisors (see below), whose sum is σ = 171558087288. Its totient is φ = 26353008000.

The previous prime is 72470773087. The next prime is 72470773139. The reversal of 72470773100 is 137707427.

It is a happy number.

It is a super-2 number, since 2×72470773100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32940161 + ... + 32942360.

Almost surely, 2^72470773100 is an apocalyptic number.

It is an amenable number.

72470773100 is an abundant number, since it is smaller than the sum of its proper divisors (99087314188).

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

72470773100 is a wasteful number, since it uses less digits than its factorization.

72470773100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65882546 (or 65882539 counting only the distinct ones).

The product of its (nonzero) digits is 57624, while the sum is 38.

The spelling of 72470773100 in words is "seventy-two billion, four hundred seventy million, seven hundred seventy-three thousand, one hundred".