2566440460 has 24 divisors (see below), whose sum is σ = 5409423936. Its totient is φ = 1022785920.

The previous prime is 2566440421. The next prime is 2566440473. The reversal of 2566440460 is 640446652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231337 + ... + 242176.

It is an arithmetic number, because the mean of its divisors is an integer number (225392664).

Almost surely, 2^2566440460 is an apocalyptic number.

2566440460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2566440460 is an abundant number, since it is smaller than the sum of its proper divisors (2842983476).

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

2566440460 is a wasteful number, since it uses less digits than its factorization.

2566440460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473793 (or 473791 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 2566440460 is about 50660.0479668150. The cubic root of 2566440460 is about 1369.1269874483.

The spelling of 2566440460 in words is "two billion, five hundred sixty-six million, four hundred forty thousand, four hundred sixty".