55441971200 has 720 divisors, whose sum is σ = 179208764280. Its totient is φ = 16859136000.

The previous prime is 55441971199. The next prime is 55441971209. The reversal of 55441971200 is 217914455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55441971209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1352243180 + ... + 1352243220.

Almost surely, 2^55441971200 is an apocalyptic number.

55441971200 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 55441971200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89604382140).

55441971200 is an abundant number, since it is smaller than the sum of its proper divisors (123766793080).

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

55441971200 is an equidigital number, since it uses as much as digits as its factorization.

55441971200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 55441971200 in words is "fifty-five billion, four hundred forty-one million, nine hundred seventy-one thousand, two hundred".