72220766752 has 48 divisors (see below), whose sum is σ = 143099331480. Its totient is φ = 35878551552.

The previous prime is 72220766747. The next prime is 72220766771. The reversal of 72220766752 is 25766702227.

It can be written as a sum of positive squares in 4 ways, for example, as 49481333136 + 22739433616 = 222444^2 + 150796^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5261274 + ... + 5274982.

Almost surely, 2^72220766752 is an apocalyptic number.

It is an amenable number.

72220766752 is a deficient number, since it is larger than the sum of its proper divisors (70878564728).

72220766752 is a wasteful number, since it uses less digits than its factorization.

72220766752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14765 (or 14757 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 72220766752 in words is "seventy-two billion, two hundred twenty million, seven hundred sixty-six thousand, seven hundred fifty-two".