55210819968 has 64 divisors (see below), whose sum is σ = 162948610800. Its totient is φ = 18403605504.

The previous prime is 55210819957. The next prime is 55210819999. The reversal of 55210819968 is 86991801255.

55210819968 is a `hidden beast` number, since 552 + 1 + 0 + 81 + 9 + 9 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7984221 + ... + 7991132.

Almost surely, 2^55210819968 is an apocalyptic number.

It is an amenable number.

55210819968 is an abundant number, since it is smaller than the sum of its proper divisors (107737790832).

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

55210819968 is a wasteful number, since it uses less digits than its factorization.

55210819968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15975376 (or 15975358 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 54.

The spelling of 55210819968 in words is "fifty-five billion, two hundred ten million, eight hundred nineteen thousand, nine hundred sixty-eight".