55647988974656 has 56 divisors (see below), whose sum is σ = 119543445041664. Its totient is φ = 25549217579520.

The previous prime is 55647988974623. The next prime is 55647988974701. The reversal of 55647988974656 is 65647988974655.

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 7 ways as a sum of consecutive naturals, for example, 174931670 + ... + 175249493.

It is an arithmetic number, because the mean of its divisors is an integer number (2134704375744).

Almost surely, 2^{55647988974656} is an apocalyptic number.

It is an amenable number.

55647988974656 is an abundant number, since it is smaller than the sum of its proper divisors (63895456067008).

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

55647988974656 is a wasteful number, since it uses less digits than its factorization.

55647988974656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350181379 (or 350181369 counting only the distinct ones).

The product of its digits is 109734912000, while the sum is 89.

Subtracting 55647988974656 from its reverse (65647988974655), we obtain a palindrome (9999999999999).

The spelling of 55647988974656 in words is "fifty-five trillion, six hundred forty-seven billion, nine hundred eighty-eight million, nine hundred seventy-four thousand, six hundred fifty-six".