72757782080 has 56 divisors (see below), whose sum is σ = 174969937080. Its totient is φ = 28814950400.

The previous prime is 72757782079. The next prime is 72757782101. The reversal of 72757782080 is 8028775727.

It can be written as a sum of positive squares in 4 ways, for example, as 42776166976 + 29981615104 = 206824^2 + 173152^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093265 + ... + 1157904.

Almost surely, 2^72757782080 is an apocalyptic number.

It is an amenable number.

72757782080 is an abundant number, since it is smaller than the sum of its proper divisors (102212155000).

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

72757782080 is a wasteful number, since it uses less digits than its factorization.

72757782080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251287 (or 2251277 counting only the distinct ones).

The product of its (nonzero) digits is 3073280, while the sum is 53.

The spelling of 72757782080 in words is "seventy-two billion, seven hundred fifty-seven million, seven hundred eighty-two thousand, eighty".