72677815772 has 12 divisors (see below), whose sum is σ = 127188075840. Its totient is φ = 36338365536.

The previous prime is 72677815753. The next prime is 72677815789. The reversal of 72677815772 is 27751877627.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408629 + ... + 558867.

It is an arithmetic number, because the mean of its divisors is an integer number (10599006320).

Almost surely, 2^72677815772 is an apocalyptic number.

It is an amenable number.

72677815772 is a deficient number, since it is larger than the sum of its proper divisors (54510260068).

72677815772 is a wasteful number, since it uses less digits than its factorization.

72677815772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271180 (or 271178 counting only the distinct ones).

The product of its digits is 16134720, while the sum is 59.

The spelling of 72677815772 in words is "seventy-two billion, six hundred seventy-seven million, eight hundred fifteen thousand, seven hundred seventy-two".