55940544000 has 1120 divisors, whose sum is σ = 230247182880. Its totient is φ = 13436928000.

The previous prime is 55940543993. The next prime is 55940544001. The reversal of 55940544000 is 44504955.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55940544001) 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 111 ways as a sum of consecutive naturals, for example, 513215946 + ... + 513216054.

Almost surely, 2^55940544000 is an apocalyptic number.

55940544000 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 55940544000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115123591440).

55940544000 is an abundant number, since it is smaller than the sum of its proper divisors (174306638880).

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

55940544000 is an equidigital number, since it uses as much as digits as its factorization.

55940544000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 55940544000 in words is "fifty-five billion, nine hundred forty million, five hundred forty-four thousand".