55563318328 has 48 divisors (see below), whose sum is σ = 121211557920. Its totient is φ = 23808693888.

The previous prime is 55563318319. The next prime is 55563318329. The reversal of 55563318328 is 82381336555.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55563318329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3522876 + ... + 3538612.

It is an arithmetic number, because the mean of its divisors is an integer number (2525240790).

Almost surely, 2^55563318328 is an apocalyptic number.

It is an amenable number.

55563318328 is an abundant number, since it is smaller than the sum of its proper divisors (65648239592).

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

55563318328 is a wasteful number, since it uses less digits than its factorization.

55563318328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24764 (or 24753 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 49.

The spelling of 55563318328 in words is "fifty-five billion, five hundred sixty-three million, three hundred eighteen thousand, three hundred twenty-eight".