56815554276 has 240 divisors, whose sum is σ = 175207641840. Its totient is φ = 15885434880.

The previous prime is 56815554241. The next prime is 56815554287. The reversal of 56815554276 is 67245551865.

56815554276 is a `hidden beast` number, since 5 + 6 + 8 + 15 + 554 + 2 + 76 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 19131876 + 56796422400 = 4374^2 + 238320^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2062836 + ... + 2090196.

It is an arithmetic number, because the mean of its divisors is an integer number (730031841).

Almost surely, 2^56815554276 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 56815554276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87603820920).

56815554276 is an abundant number, since it is smaller than the sum of its proper divisors (118392087564).

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

56815554276 is a wasteful number, since it uses less digits than its factorization.

56815554276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27436 (or 27425 counting only the distinct ones).

The product of its digits is 10080000, while the sum is 54.

The spelling of 56815554276 in words is "fifty-six billion, eight hundred fifteen million, five hundred fifty-four thousand, two hundred seventy-six".