55383981664 has 48 divisors (see below), whose sum is σ = 120725107776. Its totient is φ = 24798787200.

The previous prime is 55383981637. The next prime is 55383981671. The reversal of 55383981664 is 46618938355.

It is a junction number, because it is equal to n+sod(n) for n = 55383981599 and 55383981608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150602 + ... + 1197769.

It is an arithmetic number, because the mean of its divisors is an integer number (2515106412).

Almost surely, 2^55383981664 is an apocalyptic number.

It is an amenable number.

55383981664 is an abundant number, since it is smaller than the sum of its proper divisors (65341126112).

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

55383981664 is a wasteful number, since it uses less digits than its factorization.

55383981664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348459 (or 2348451 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 58.

The spelling of 55383981664 in words is "fifty-five billion, three hundred eighty-three million, nine hundred eighty-one thousand, six hundred sixty-four".