72177666112 has 14 divisors (see below), whose sum is σ = 143227556318. Its totient is φ = 36088833024.

The previous prime is 72177666109. The next prime is 72177666161. The reversal of 72177666112 is 21166677127.

It can be written as a sum of positive squares in only one way, i.e., 50938684416 + 21238981696 = 225696^2 + 145736^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563887953 + ... + 563888080.

It is an arithmetic number, because the mean of its divisors is an integer number (10230539737).

Almost surely, 2^72177666112 is an apocalyptic number.

It is an amenable number.

72177666112 is a deficient number, since it is larger than the sum of its proper divisors (71049890206).

72177666112 is a wasteful number, since it uses less digits than its factorization.

72177666112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127776045 (or 1127776035 counting only the distinct ones).

The product of its digits is 296352, while the sum is 46.

The spelling of 72177666112 in words is "seventy-two billion, one hundred seventy-seven million, six hundred sixty-six thousand, one hundred twelve".