2566161604 has 12 divisors (see below), whose sum is σ = 4491549328. Its totient is φ = 1282861800.

The previous prime is 2566161593. The next prime is 2566161607. The reversal of 2566161604 is 4061616652.

It is not an unprimeable number, because it can be changed into a prime (2566161607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26802 + ... + 76489.

Almost surely, 2^2566161604 is an apocalyptic number.

It is an amenable number.

2566161604 is a deficient number, since it is larger than the sum of its proper divisors (1925387724).

2566161604 is a wasteful number, since it uses less digits than its factorization.

2566161604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109506 (or 109504 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2566161604 is about 50657.2956640996. The cubic root of 2566161604 is about 1369.0773982592.

The spelling of 2566161604 in words is "two billion, five hundred sixty-six million, one hundred sixty-one thousand, six hundred four".