55199232000 has 1040 divisors, whose sum is σ = 226353894624. Its totient is φ = 13381632000.

The previous prime is 55199231947. The next prime is 55199232019. The reversal of 55199232000 is 23299155.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=2640.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5018111995 + ... + 5018112005.

Almost surely, 2^55199232000 is an apocalyptic number.

55199232000 is a gapful number since it is divisible by the number (50) 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 55199232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113176947312).

55199232000 is an abundant number, since it is smaller than the sum of its proper divisors (171154662624).

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

55199232000 is an frugal number, since it uses more digits than its factorization.

55199232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The spelling of 55199232000 in words is "fifty-five billion, one hundred ninety-nine million, two hundred thirty-two thousand".