55188500256 has 384 divisors, whose sum is σ = 176353148160. Its totient is φ = 16720183296.

The previous prime is 55188500243. The next prime is 55188500287. The reversal of 55188500256 is 65200588155.

55188500256 is a `hidden beast` number, since 5 + 518 + 85 + 0 + 0 + 2 + 56 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 94017595 + ... + 94018181.

It is an arithmetic number, because the mean of its divisors is an integer number (459252990).

Almost surely, 2^55188500256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55188500256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88176574080).

55188500256 is an abundant number, since it is smaller than the sum of its proper divisors (121164647904).

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

55188500256 is a wasteful number, since it uses less digits than its factorization.

55188500256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 45.

The spelling of 55188500256 in words is "fifty-five billion, one hundred eighty-eight million, five hundred thousand, two hundred fifty-six".