2556514816 has 40 divisors (see below), whose sum is σ = 5131171584. Its totient is φ = 1272468480.

The previous prime is 2556514783. The next prime is 2556514817. The reversal of 2556514816 is 6184156552.

It is not an unprimeable number, because it can be changed into a prime (2556514817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102981 + ... + 125371.

Almost surely, 2^2556514816 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 2556514816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2565585792).

2556514816 is an abundant number, since it is smaller than the sum of its proper divisors (2574656768).

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

2556514816 is an equidigital number, since it uses as much as digits as its factorization.

2556514816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22632 (or 22616 counting only the distinct ones).

The product of its digits is 288000, while the sum is 43.

The square root of 2556514816 is about 50561.9898342619. The cubic root of 2556514816 is about 1367.3596857461.

The spelling of 2556514816 in words is "two billion, five hundred fifty-six million, five hundred fourteen thousand, eight hundred sixteen".