72220677776 has 40 divisors (see below), whose sum is σ = 158622347520. Its totient is φ = 31578270336.

The previous prime is 72220677677. The next prime is 72220677791. The reversal of 72220677776 is 67777602227.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9133280 + ... + 9141183.

It is an arithmetic number, because the mean of its divisors is an integer number (3965558688).

Almost surely, 2^72220677776 is an apocalyptic number.

72220677776 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

72220677776 is an abundant number, since it is smaller than the sum of its proper divisors (86401669744).

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

72220677776 is a wasteful number, since it uses less digits than its factorization.

72220677776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18274503 (or 18274497 counting only the distinct ones).

The product of its (nonzero) digits is 4840416, while the sum is 53.

The spelling of 72220677776 in words is "seventy-two billion, two hundred twenty million, six hundred seventy-seven thousand, seven hundred seventy-six".