72317568832 has 28 divisors (see below), whose sum is σ = 143518277860. Its totient is φ = 36155483136.

The previous prime is 72317568809. The next prime is 72317568899. The reversal of 72317568832 is 23886571327.

It can be written as a sum of positive squares in 2 ways, for example, as 62192379456 + 10125189376 = 249384^2 + 100624^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72317568832.

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, 751894 + ... + 842602.

Almost surely, 2^72317568832 is an apocalyptic number.

It is an amenable number.

72317568832 is a deficient number, since it is larger than the sum of its proper divisors (71200709028).

72317568832 is a wasteful number, since it uses less digits than its factorization.

72317568832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103178 (or 103168 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 52.

The spelling of 72317568832 in words is "seventy-two billion, three hundred seventeen million, five hundred sixty-eight thousand, eight hundred thirty-two".