72157301508 has 12 divisors (see below), whose sum is σ = 168367036880. Its totient is φ = 24052433832.

The previous prime is 72157301473. The next prime is 72157301537. The reversal of 72157301508 is 80510375127.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3006554218 + ... + 3006554241.

Almost surely, 2^72157301508 is an apocalyptic number.

It is an amenable number.

72157301508 is an abundant number, since it is smaller than the sum of its proper divisors (96209735372).

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

72157301508 is a wasteful number, since it uses less digits than its factorization.

72157301508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013108466 (or 6013108464 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The spelling of 72157301508 in words is "seventy-two billion, one hundred fifty-seven million, three hundred one thousand, five hundred eight".