55131888000 has 1024 divisors, whose sum is σ = 221596876800. Its totient is φ = 11860992000.

The previous prime is 55131887989. The next prime is 55131888011. The reversal of 55131888000 is 88813155.

It is an interprime number because it is at equal distance from previous prime (55131887989) and next prime (55131888011).

It is a self number, because there is not a number n which added to its sum of digits gives 55131888000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 697871961 + ... + 697872039.

It is an arithmetic number, because the mean of its divisors is an integer number (216403200).

Almost surely, 2^55131888000 is an apocalyptic number.

55131888000 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 55131888000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110798438400).

55131888000 is an abundant number, since it is smaller than the sum of its proper divisors (166464988800).

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

55131888000 is a wasteful number, since it uses less digits than its factorization.

55131888000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 39.

The spelling of 55131888000 in words is "fifty-five billion, one hundred thirty-one million, eight hundred eighty-eight thousand".