55899465984 has 180 divisors, whose sum is σ = 169510923120. Its totient is φ = 18316938240.

The previous prime is 55899465971. The next prime is 55899466001. The reversal of 55899465984 is 48956499855.

55899465984 is a `hidden beast` number, since 5 + 5 + 89 + 9 + 465 + 9 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1200579 + ... + 1246269.

Almost surely, 2^55899465984 is an apocalyptic number.

55899465984 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55899465984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84755461560).

55899465984 is an abundant number, since it is smaller than the sum of its proper divisors (113611457136).

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

55899465984 is an equidigital number, since it uses as much as digits as its factorization.

55899465984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45778 (or 45755 counting only the distinct ones).

The product of its digits is 559872000, while the sum is 72.

The spelling of 55899465984 in words is "fifty-five billion, eight hundred ninety-nine million, four hundred sixty-five thousand, nine hundred eighty-four".