72723371168 has 36 divisors (see below), whose sum is σ = 166549509882. Its totient is φ = 31167158400.

The previous prime is 72723371159. The next prime is 72723371177. The reversal of 72723371168 is 86117332727.

It is an interprime number because it is at equal distance from previous prime (72723371159) and next prime (72723371177).

It can be written as a sum of positive squares in only one way, i.e., 60975412624 + 11747958544 = 246932^2 + 108388^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23188283 + ... + 23191418.

Almost surely, 2^72723371168 is an apocalyptic number.

It is an amenable number.

72723371168 is an abundant number, since it is smaller than the sum of its proper divisors (93826138714).

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

72723371168 is a wasteful number, since it uses less digits than its factorization.

72723371168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46379725 (or 46379710 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

The spelling of 72723371168 in words is "seventy-two billion, seven hundred twenty-three million, three hundred seventy-one thousand, one hundred sixty-eight".