2565043968 has 216 divisors, whose sum is σ = 7373484720. Its totient is φ = 790200320.

The previous prime is 2565043913. The next prime is 2565043979. The reversal of 2565043968 is 8693405652.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48397030 + ... + 48397082.

Almost surely, 2^2565043968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2565043968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3686742360).

2565043968 is an abundant number, since it is smaller than the sum of its proper divisors (4808440752).

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

2565043968 is an equidigital number, since it uses as much as digits as its factorization.

2565043968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The square root of 2565043968 is about 50646.2631197999. The cubic root of 2565043968 is about 1368.8786120803.

The spelling of 2565043968 in words is "two billion, five hundred sixty-five million, forty-three thousand, nine hundred sixty-eight".