27038561656 has 8 divisors (see below), whose sum is σ = 50697303120. Its totient is φ = 13519280824.

The previous prime is 27038561609. The next prime is 27038561687. The reversal of 27038561656 is 65616583072.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1689910096 + ... + 1689910111.

It is an arithmetic number, because the mean of its divisors is an integer number (6337162890).

Almost surely, 2^27038561656 is an apocalyptic number.

It is an amenable number.

27038561656 is a deficient number, since it is larger than the sum of its proper divisors (23658741464).

27038561656 is a wasteful number, since it uses less digits than its factorization.

27038561656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379820213 (or 3379820209 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 27038561656 in words is "twenty-seven billion, thirty-eight million, five hundred sixty-one thousand, six hundred fifty-six".