55918838965 has 24 divisors (see below), whose sum is σ = 76136707584. Its totient is φ = 39356354400.

The previous prime is 55918838893. The next prime is 55918838999. The reversal of 55918838965 is 56983881955.

It is a de Polignac number, because none of the positive numbers 2^k-55918838965 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55918838965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1472017 + ... + 1509526.

It is an arithmetic number, because the mean of its divisors is an integer number (3172362816).

Almost surely, 2^55918838965 is an apocalyptic number.

55918838965 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55918838965 is a deficient number, since it is larger than the sum of its proper divisors (20217868619).

55918838965 is a wasteful number, since it uses less digits than its factorization.

55918838965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981601 (or 2981590 counting only the distinct ones).

The product of its digits is 93312000, while the sum is 67.

The spelling of 55918838965 in words is "fifty-five billion, nine hundred eighteen million, eight hundred thirty-eight thousand, nine hundred sixty-five".