2566466560 has 176 divisors, whose sum is σ = 7115699520. Its totient is φ = 869990400.

The previous prime is 2566466549. The next prime is 2566466561. The reversal of 2566466560 is 656646652.

It is a self number, because there is not a number n which added to its sum of digits gives 2566466560.

It is not an unprimeable number, because it can be changed into a prime (2566466561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3619486 + ... + 3620194.

Almost surely, 2^2566466560 is an apocalyptic number.

2566466560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2566466560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3557849760).

2566466560 is an abundant number, since it is smaller than the sum of its proper divisors (4549232960).

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

2566466560 is a wasteful number, since it uses less digits than its factorization.

2566466560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The square root of 2566466560 is about 50660.3055656004. The cubic root of 2566466560 is about 1369.1316286487.

The spelling of 2566466560 in words is "two billion, five hundred sixty-six million, four hundred sixty-six thousand, five hundred sixty".