72917553936 has 80 divisors (see below), whose sum is σ = 198108463104. Its totient is φ = 23065967232.

The previous prime is 72917553889. The next prime is 72917553949. The reversal of 72917553936 is 63935571927.

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, 119826 + ... + 400241.

Almost surely, 2^72917553936 is an apocalyptic number.

It is an amenable number.

72917553936 is an abundant number, since it is smaller than the sum of its proper divisors (125190909168).

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

72917553936 is a wasteful number, since it uses less digits than its factorization.

72917553936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520228 (or 520222 counting only the distinct ones).

The product of its digits is 10716300, while the sum is 57.

The spelling of 72917553936 in words is "seventy-two billion, nine hundred seventeen million, five hundred fifty-three thousand, nine hundred thirty-six".