72165229308 has 36 divisors (see below), whose sum is σ = 182510299608. Its totient is φ = 24042860640.

The previous prime is 72165229267. The next prime is 72165229327. The reversal of 72165229308 is 80392256127.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436978 + ... + 579033.

Almost surely, 2^72165229308 is an apocalyptic number.

It is an amenable number.

72165229308 is an abundant number, since it is smaller than the sum of its proper divisors (110345070300).

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

72165229308 is a wasteful number, since it uses less digits than its factorization.

72165229308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017994 (or 1017989 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 72165229308 in words is "seventy-two billion, one hundred sixty-five million, two hundred twenty-nine thousand, three hundred eight".