2566948880 has 20 divisors (see below), whose sum is σ = 5968156332. Its totient is φ = 1026779520.

The previous prime is 2566948873. The next prime is 2566948903. The reversal of 2566948880 is 888496652.

It can be written as a sum of positive squares in 2 ways, for example, as 1042514944 + 1524433936 = 32288^2 + 39044^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16043351 + ... + 16043510.

Almost surely, 2^2566948880 is an apocalyptic number.

2566948880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2566948880 is an abundant number, since it is smaller than the sum of its proper divisors (3401207452).

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

2566948880 is a wasteful number, since it uses less digits than its factorization.

2566948880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32086874 (or 32086868 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 56.

The square root of 2566948880 is about 50665.0656764599. The cubic root of 2566948880 is about 1369.2173909459.

The spelling of 2566948880 in words is "two billion, five hundred sixty-six million, nine hundred forty-eight thousand, eight hundred eighty".