55607556644 has 12 divisors (see below), whose sum is σ = 98765660784. Its totient is φ = 27388796424.

The previous prime is 55607556601. The next prime is 55607556689. The reversal of 55607556644 is 44665570655.

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, 103745174 + ... + 103745709.

It is an arithmetic number, because the mean of its divisors is an integer number (8230471732).

Almost surely, 2^55607556644 is an apocalyptic number.

It is an amenable number.

55607556644 is a deficient number, since it is larger than the sum of its proper divisors (43158104140).

55607556644 is a wasteful number, since it uses less digits than its factorization.

55607556644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207490954 (or 207490952 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 53.

The spelling of 55607556644 in words is "fifty-five billion, six hundred seven million, five hundred fifty-six thousand, six hundred forty-four".