56861312105 has 24 divisors (see below), whose sum is σ = 78059089752. Its totient is φ = 39519885312.

The previous prime is 56861312093. The next prime is 56861312107. The reversal of 56861312105 is 50121316865.

56861312105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 24816015961 + 32045296144 = 157531^2 + 179012^2 .

It is not a de Polignac number, because 56861312105 - 2⁴ = 56861312089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56861312107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1494692 + ... + 1532261.

It is an arithmetic number, because the mean of its divisors is an integer number (3252462073).

Almost surely, 2^56861312105 is an apocalyptic number.

It is an amenable number.

56861312105 is a deficient number, since it is larger than the sum of its proper divisors (21197777647).

56861312105 is a wasteful number, since it uses less digits than its factorization.

56861312105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027005 (or 3026988 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 56861312105 in words is "fifty-six billion, eight hundred sixty-one million, three hundred twelve thousand, one hundred five".