55981184000 has 352 divisors, whose sum is σ = 163436672256. Its totient is φ = 18734284800.

The previous prime is 55981183913. The next prime is 55981184027. The reversal of 55981184000 is 48118955.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38527274 + ... + 38528726.

It is an arithmetic number, because the mean of its divisors is an integer number (464308728).

Almost surely, 2^55981184000 is an apocalyptic number.

55981184000 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 55981184000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81718336128).

55981184000 is an abundant number, since it is smaller than the sum of its proper divisors (107455488256).

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

55981184000 is a wasteful number, since it uses less digits than its factorization.

55981184000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 41.

The spelling of 55981184000 in words is "fifty-five billion, nine hundred eighty-one million, one hundred eighty-four thousand".