72893956644 has 48 divisors (see below), whose sum is σ = 190143791040. Its totient is φ = 24148912320.

The previous prime is 72893956637. The next prime is 72893956657. The reversal of 72893956644 is 44665939827.

72893956644 is a `hidden beast` number, since 7 + 28 + 9 + 3 + 9 + 566 + 44 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2052777 + ... + 2087984.

It is an arithmetic number, because the mean of its divisors is an integer number (3961328980).

Almost surely, 2^72893956644 is an apocalyptic number.

It is an amenable number.

72893956644 is an abundant number, since it is smaller than the sum of its proper divisors (117249834396).

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

72893956644 is a wasteful number, since it uses less digits than its factorization.

72893956644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140937 (or 4140929 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 72893956644 in words is "seventy-two billion, eight hundred ninety-three million, nine hundred fifty-six thousand, six hundred forty-four".