55664395968 has 42 divisors (see below), whose sum is σ = 147287364556. Its totient is φ = 18553708928.

The previous prime is 55664395951. The next prime is 55664395981. The reversal of 55664395968 is 86959346655.

It is a junction number, because it is equal to n+sod(n) for n = 55664395899 and 55664395908.

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 5 ways as a sum of consecutive naturals, for example, 3260671 + ... + 3277697.

Almost surely, 2^55664395968 is an apocalyptic number.

It is an amenable number.

55664395968 is an abundant number, since it is smaller than the sum of its proper divisors (91622968588).

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

55664395968 is an frugal number, since it uses more digits than its factorization.

55664395968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34069 (or 17032 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 66.

The spelling of 55664395968 in words is "fifty-five billion, six hundred sixty-four million, three hundred ninety-five thousand, nine hundred sixty-eight".