56606515785 has 12 divisors (see below), whose sum is σ = 98117960772. Its totient is φ = 30190141728.

The previous prime is 56606515741. The next prime is 56606515811. The reversal of 56606515785 is 58751560665.

56606515785 is a `hidden beast` number, since 5 + 6 + 6 + 0 + 65 + 1 + 578 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11726940681 + 44879575104 = 108291^2 + 211848^2 .

It is not a de Polignac number, because 56606515785 - 2⁷ = 56606515657 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 628961242 + ... + 628961331.

It is an arithmetic number, because the mean of its divisors is an integer number (8176496731).

Almost surely, 2^56606515785 is an apocalyptic number.

It is an amenable number.

56606515785 is a deficient number, since it is larger than the sum of its proper divisors (41511444987).

56606515785 is a wasteful number, since it uses less digits than its factorization.

56606515785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257922584 (or 1257922581 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 54.

The spelling of 56606515785 in words is "fifty-six billion, six hundred six million, five hundred fifteen thousand, seven hundred eighty-five".