2566080638 has 24 divisors (see below), whose sum is σ = 4256873544. Its totient is φ = 1159226640.

The previous prime is 2566080613. The next prime is 2566080641. The reversal of 2566080638 is 8360806652.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6920 + ... + 71972.

It is an arithmetic number, because the mean of its divisors is an integer number (177369731).

Almost surely, 2^2566080638 is an apocalyptic number.

2566080638 is a deficient number, since it is larger than the sum of its proper divisors (1690792906).

2566080638 is a wasteful number, since it uses less digits than its factorization.

2566080638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65240 (or 65229 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 2566080638 is about 50656.4965034101. The cubic root of 2566080638 is about 1369.0629993367.

The spelling of 2566080638 in words is "two billion, five hundred sixty-six million, eighty thousand, six hundred thirty-eight".