72202720872 has 32 divisors (see below), whose sum is σ = 180513446400. Its totient is φ = 24066687744.

The previous prime is 72202720871. The next prime is 72202720897. The reversal of 72202720872 is 27802720227.

It is a self number, because there is not a number n which added to its sum of digits gives 72202720872.

It is not an unprimeable number, because it can be changed into a prime (72202720871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115904 + ... + 1178832.

It is an arithmetic number, because the mean of its divisors is an integer number (5641045200).

Almost surely, 2^72202720872 is an apocalyptic number.

It is an amenable number.

72202720872 is an abundant number, since it is smaller than the sum of its proper divisors (108310725528).

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

72202720872 is a wasteful number, since it uses less digits than its factorization.

72202720872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110745 (or 110741 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 39.

The spelling of 72202720872 in words is "seventy-two billion, two hundred two million, seven hundred twenty thousand, eight hundred seventy-two".