55249563664 has 20 divisors (see below), whose sum is σ = 107287682256. Its totient is φ = 27562419872.

The previous prime is 55249563637. The next prime is 55249563673. The reversal of 55249563664 is 46636594255.

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, 3890314 + ... + 3904489.

Almost surely, 2^55249563664 is an apocalyptic number.

It is an amenable number.

55249563664 is a deficient number, since it is larger than the sum of its proper divisors (52038118592).

55249563664 is a wasteful number, since it uses less digits than its factorization.

55249563664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7795254 (or 7795248 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 55.

The spelling of 55249563664 in words is "fifty-five billion, two hundred forty-nine million, five hundred sixty-three thousand, six hundred sixty-four".