72227156730 has 32 divisors (see below), whose sum is σ = 173427912000. Its totient is φ = 19251382272.

The previous prime is 72227156713. The next prime is 72227156741. The reversal of 72227156730 is 3765172227.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510535 + ... + 636474.

It is an arithmetic number, because the mean of its divisors is an integer number (5419622250).

Almost surely, 2^72227156730 is an apocalyptic number.

72227156730 is an abundant number, since it is smaller than the sum of its proper divisors (101200755270).

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

72227156730 is a wasteful number, since it uses less digits than its factorization.

72227156730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149118.

The product of its (nonzero) digits is 246960, while the sum is 42.

The spelling of 72227156730 in words is "seventy-two billion, two hundred twenty-seven million, one hundred fifty-six thousand, seven hundred thirty".