72894627956 has 12 divisors (see below), whose sum is σ = 127570642500. Its totient is φ = 36445872960.

The previous prime is 72894627919. The next prime is 72894627983. The reversal of 72894627956 is 65972649827.

It can be written as a sum of positive squares in 2 ways, for example, as 47904076900 + 24990551056 = 218870^2 + 158084^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72894627892 and 72894627901.

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, 242135 + ... + 452126.

It is an arithmetic number, because the mean of its divisors is an integer number (10630886875).

Almost surely, 2^72894627956 is an apocalyptic number.

It is an amenable number.

72894627956 is a deficient number, since it is larger than the sum of its proper divisors (54676014544).

72894627956 is a wasteful number, since it uses less digits than its factorization.

72894627956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720514 (or 720512 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 65.

The spelling of 72894627956 in words is "seventy-two billion, eight hundred ninety-four million, six hundred twenty-seven thousand, nine hundred fifty-six".