72564079268 has 12 divisors (see below), whose sum is σ = 126989085132. Its totient is φ = 36281483520.

The previous prime is 72564079243. The next prime is 72564079277. The reversal of 72564079268 is 86297046527.

It can be written as a sum of positive squares in 2 ways, for example, as 51561693184 + 21002386084 = 227072^2 + 144922^2 .

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, 331496 + ... + 504992.

It is an arithmetic number, because the mean of its divisors is an integer number (10582423761).

Almost surely, 2^72564079268 is an apocalyptic number.

It is an amenable number.

72564079268 is a deficient number, since it is larger than the sum of its proper divisors (54425005864).

72564079268 is a wasteful number, since it uses less digits than its factorization.

72564079268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278062 (or 278060 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 72564079268 in words is "seventy-two billion, five hundred sixty-four million, seventy-nine thousand, two hundred sixty-eight".