56505601116 has 72 divisors (see below), whose sum is σ = 147909827520. Its totient is φ = 18167135616.

The previous prime is 56505601109. The next prime is 56505601157. The reversal of 56505601116 is 61110650565.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1013725 + ... + 1068011.

It is an arithmetic number, because the mean of its divisors is an integer number (2054303160).

Almost surely, 2^56505601116 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 56505601116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73954913760).

56505601116 is an abundant number, since it is smaller than the sum of its proper divisors (91404226404).

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

56505601116 is a wasteful number, since it uses less digits than its factorization.

56505601116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55323 (or 55318 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 56505601116 in words is "fifty-six billion, five hundred five million, six hundred one thousand, one hundred sixteen".