2566449876 has 48 divisors (see below), whose sum is σ = 6029856000. Its totient is φ = 849580032.

The previous prime is 2566449869. The next prime is 2566449877. The reversal of 2566449876 is 6789446652.

Its product of digits (17418240) is a multiple of the sum of its prime factors (2688).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566449877) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1286736 + ... + 1288728.

It is an arithmetic number, because the mean of its divisors is an integer number (125622000).

Almost surely, 2^2566449876 is an apocalyptic number.

It is an amenable number.

2566449876 is an abundant number, since it is smaller than the sum of its proper divisors (3463406124).

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

2566449876 is a wasteful number, since it uses less digits than its factorization.

2566449876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688 (or 2686 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 57.

The square root of 2566449876 is about 50660.1408999225. The cubic root of 2566449876 is about 1369.1286618405.

The spelling of 2566449876 in words is "two billion, five hundred sixty-six million, four hundred forty-nine thousand, eight hundred seventy-six".