72444868568 has 8 divisors (see below), whose sum is σ = 135834128580. Its totient is φ = 36222434280.

The previous prime is 72444868549. The next prime is 72444868579. The reversal of 72444868568 is 86586844427.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 72444868568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4527804278 + ... + 4527804293.

Almost surely, 2^72444868568 is an apocalyptic number.

It is an amenable number.

72444868568 is a deficient number, since it is larger than the sum of its proper divisors (63389260012).

72444868568 is a wasteful number, since it uses less digits than its factorization.

72444868568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055608577 (or 9055608573 counting only the distinct ones).

The product of its digits is 82575360, while the sum is 62.

The spelling of 72444868568 in words is "seventy-two billion, four hundred forty-four million, eight hundred sixty-eight thousand, five hundred sixty-eight".