27256560872 has 64 divisors (see below), whose sum is σ = 54517104000. Its totient is φ = 12747423744.

The previous prime is 27256560857. The next prime is 27256560899. The reversal of 27256560872 is 27806565272.

It is a super-2 number, since 2×27256560872² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27256560872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2088704 + ... + 2101712.

It is an arithmetic number, because the mean of its divisors is an integer number (851829750).

Almost surely, 2^27256560872 is an apocalyptic number.

It is an amenable number.

27256560872 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

27256560872 is a wasteful number, since it uses less digits than its factorization.

27256560872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13290 (or 13286 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 27256560872 in words is "twenty-seven billion, two hundred fifty-six million, five hundred sixty thousand, eight hundred seventy-two".