72578792064 has 64 divisors (see below), whose sum is σ = 192954371040. Its totient is φ = 24171979776.

The previous prime is 72578792059. The next prime is 72578792123. The reversal of 72578792064 is 46029787527.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 72578791995 and 72578792013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365334 + ... + 527850.

Almost surely, 2^72578792064 is an apocalyptic number.

It is an amenable number.

72578792064 is an abundant number, since it is smaller than the sum of its proper divisors (120375578976).

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

72578792064 is a wasteful number, since it uses less digits than its factorization.

72578792064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163697 (or 163685 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 72578792064 in words is "seventy-two billion, five hundred seventy-eight million, seven hundred ninety-two thousand, sixty-four".