55660551656 has 16 divisors (see below), whose sum is σ = 104664299040. Its totient is φ = 27750071920.

The previous prime is 55660551637. The next prime is 55660551719. The reversal of 55660551656 is 65615506655.

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 3 ways as a sum of consecutive naturals, for example, 10022540 + ... + 10028091.

It is an arithmetic number, because the mean of its divisors is an integer number (6541518690).

Almost surely, 2^55660551656 is an apocalyptic number.

It is an amenable number.

55660551656 is a deficient number, since it is larger than the sum of its proper divisors (49003747384).

55660551656 is a wasteful number, since it uses less digits than its factorization.

55660551656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20050984 (or 20050980 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 55660551656 in words is "fifty-five billion, six hundred sixty million, five hundred fifty-one thousand, six hundred fifty-six".