55685766758656 has 36 divisors (see below), whose sum is σ = 111835937522512. Its totient is φ = 27672068123136.

The previous prime is 55685766758593. The next prime is 55685766758683. The reversal of 55685766758656 is 65685766758655.

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 3 ways as a sum of consecutive naturals, for example, 667205286 + ... + 667288741.

Almost surely, 2^{55685766758656} is an apocalyptic number.

It is an amenable number.

55685766758656 is an abundant number, since it is smaller than the sum of its proper divisors (56150170763856).

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

55685766758656 is a wasteful number, since it uses less digits than its factorization.

55685766758656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334494206 (or 1334494192 counting only the distinct ones).

The product of its digits is 76204800000, while the sum is 85.

Subtracting 55685766758656 from its reverse (65685766758655), we obtain a palindrome (9999999999999).

The spelling of 55685766758656 in words is "fifty-five trillion, six hundred eighty-five billion, seven hundred sixty-six million, seven hundred fifty-eight thousand, six hundred fifty-six".