2656131066 has 24 divisors (see below), whose sum is σ = 5796962964. Its totient is φ = 878913600.

The previous prime is 2656131047. The next prime is 2656131077. The reversal of 2656131066 is 6601316562.

2656131066 is a `hidden beast` number, since 2 + 6 + 561 + 31 + 0 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2644942041 + 11189025 = 51429^2 + 3345^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2656131066.

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 11 ways as a sum of consecutive naturals, for example, 536085 + ... + 541016.

Almost surely, 2^2656131066 is an apocalyptic number.

2656131066 is an abundant number, since it is smaller than the sum of its proper divisors (3140831898).

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

2656131066 is a wasteful number, since it uses less digits than its factorization.

2656131066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077246 (or 1077243 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 2656131066 is about 51537.6664780236. Note that the first 3 decimals coincide. The cubic root of 2656131066 is about 1384.8938939596.

The spelling of 2656131066 in words is "two billion, six hundred fifty-six million, one hundred thirty-one thousand, sixty-six".