72228650872 has 16 divisors (see below), whose sum is σ = 154775680560. Its totient is φ = 30955136064.

The previous prime is 72228650827. The next prime is 72228650887. The reversal of 72228650872 is 27805682227.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644898613 + ... + 644898724.

It is an arithmetic number, because the mean of its divisors is an integer number (9673480035).

Almost surely, 2^72228650872 is an apocalyptic number.

It is an amenable number.

72228650872 is an abundant number, since it is smaller than the sum of its proper divisors (82547029688).

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

72228650872 is a wasteful number, since it uses less digits than its factorization.

72228650872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289797350 (or 1289797346 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 72228650872 in words is "seventy-two billion, two hundred twenty-eight million, six hundred fifty thousand, eight hundred seventy-two".