72079617388 has 24 divisors (see below), whose sum is σ = 131425265664. Its totient is φ = 34551272400.

The previous prime is 72079617359. The next prime is 72079617391. The reversal of 72079617388 is 88371697027.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2703028 + ... + 2729563.

It is an arithmetic number, because the mean of its divisors is an integer number (5476052736).

Almost surely, 2^72079617388 is an apocalyptic number.

It is an amenable number.

72079617388 is a deficient number, since it is larger than the sum of its proper divisors (59345648276).

72079617388 is a wasteful number, since it uses less digits than its factorization.

72079617388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432733 (or 5432731 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 58.

The spelling of 72079617388 in words is "seventy-two billion, seventy-nine million, six hundred seventeen thousand, three hundred eighty-eight".