55243372800 has 1296 divisors, whose sum is σ = 237315921920. Its totient is φ = 11070259200.

The previous prime is 55243372799. The next prime is 55243372813. The reversal of 55243372800 is 827334255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 699283161 + ... + 699283239.

Almost surely, 2^55243372800 is an apocalyptic number.

55243372800 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 55243372800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118657960960).

55243372800 is an abundant number, since it is smaller than the sum of its proper divisors (182072549120).

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

55243372800 is a wasteful number, since it uses less digits than its factorization.

55243372800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 55243372800 in words is "fifty-five billion, two hundred forty-three million, three hundred seventy-two thousand, eight hundred".