72660009712 has 10 divisors (see below), whose sum is σ = 140778768848. Its totient is φ = 36330004848.

The previous prime is 72660009701. The next prime is 72660009743. The reversal of 72660009712 is 21790006627.

It is a super-5 number, since 5×72660009712⁵ (a number of 56 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270625288 + ... + 2270625319.

Almost surely, 2^72660009712 is an apocalyptic number.

It is an amenable number.

72660009712 is a deficient number, since it is larger than the sum of its proper divisors (68118759136).

72660009712 is a wasteful number, since it uses less digits than its factorization.

72660009712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541250615 (or 4541250609 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 72660009712 in words is "seventy-two billion, six hundred sixty million, nine thousand, seven hundred twelve".