27747682656 has 24 divisors (see below), whose sum is σ = 72837667224. Its totient is φ = 9249227520.

The previous prime is 27747682643. The next prime is 27747682681. The reversal of 27747682656 is 65628674772.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 27747682656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144519085 + ... + 144519276.

It is an arithmetic number, because the mean of its divisors is an integer number (3034902801).

Almost surely, 2^27747682656 is an apocalyptic number.

It is an amenable number.

27747682656 is an abundant number, since it is smaller than the sum of its proper divisors (45089984568).

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

27747682656 is a wasteful number, since it uses less digits than its factorization.

27747682656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289038374 (or 289038366 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 60.

The spelling of 27747682656 in words is "twenty-seven billion, seven hundred forty-seven million, six hundred eighty-two thousand, six hundred fifty-six".