2566138534 has 8 divisors (see below), whose sum is σ = 3867451128. Its totient is φ = 1276988160.

The previous prime is 2566138493. The next prime is 2566138579. The reversal of 2566138534 is 4358316652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040027 + ... + 3040870.

It is an arithmetic number, because the mean of its divisors is an integer number (483431391).

Almost surely, 2^2566138534 is an apocalyptic number.

2566138534 is a deficient number, since it is larger than the sum of its proper divisors (1301312594).

2566138534 is a wasteful number, since it uses less digits than its factorization.

2566138534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6081110.

The product of its digits is 518400, while the sum is 43.

The square root of 2566138534 is about 50657.0679569989. The cubic root of 2566138534 is about 1369.0732955415.

The spelling of 2566138534 in words is "two billion, five hundred sixty-six million, one hundred thirty-eight thousand, five hundred thirty-four".