56655111000 has 128 divisors (see below), whose sum is σ = 177753139200. Its totient is φ = 15023484800.

The previous prime is 56655110989. The next prime is 56655111041. The reversal of 56655111000 is 11155665.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 484249 + ... + 589751.

It is an arithmetic number, because the mean of its divisors is an integer number (1388696400).

Almost surely, 2^56655111000 is an apocalyptic number.

56655111000 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 56655111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88876569600).

56655111000 is an abundant number, since it is smaller than the sum of its proper divisors (121098028200).

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

56655111000 is a wasteful number, since it uses less digits than its factorization.

56655111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105706 (or 105692 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 56655111000 its reverse (11155665), we get a palindrome (56666266665).

The spelling of 56655111000 in words is "fifty-six billion, six hundred fifty-five million, one hundred eleven thousand".