27657664612 has 48 divisors (see below), whose sum is σ = 49618396800. Its totient is φ = 13486072320.

The previous prime is 27657664607. The next prime is 27657664627. The reversal of 27657664612 is 21646675672.

It is a super-2 number, since 2×27657664612² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 27657664612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10599564 + ... + 10602172.

It is an arithmetic number, because the mean of its divisors is an integer number (1033716600).

Almost surely, 2^27657664612 is an apocalyptic number.

It is an amenable number.

27657664612 is a deficient number, since it is larger than the sum of its proper divisors (21960732188).

27657664612 is a wasteful number, since it uses less digits than its factorization.

27657664612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076 (or 3074 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 52.

The spelling of 27657664612 in words is "twenty-seven billion, six hundred fifty-seven million, six hundred sixty-four thousand, six hundred twelve".