72992311492 has 6 divisors (see below), whose sum is σ = 127736545118. Its totient is φ = 36496155744.

The previous prime is 72992311487. The next prime is 72992311493. The reversal of 72992311492 is 29411329927.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51178203076 + 21814108416 = 226226^2 + 147696^2 .

It is not an unprimeable number, because it can be changed into a prime (72992311493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9124038933 + ... + 9124038940.

Almost surely, 2^72992311492 is an apocalyptic number.

It is an amenable number.

72992311492 is a deficient number, since it is larger than the sum of its proper divisors (54744233626).

72992311492 is a wasteful number, since it uses less digits than its factorization.

72992311492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18248077877 (or 18248077875 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The spelling of 72992311492 in words is "seventy-two billion, nine hundred ninety-two million, three hundred eleven thousand, four hundred ninety-two".