2556878960 has 160 divisors (see below), whose sum is σ = 6363878400. Its totient is φ = 953738240.

The previous prime is 2556878939. The next prime is 2556878981. The reversal of 2556878960 is 698786552.

It is an interprime number because it is at equal distance from previous prime (2556878939) and next prime (2556878981).

It is a junction number, because it is equal to n+sod(n) for n = 2556878896 and 2556878905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14284151 + ... + 14284329.

It is an arithmetic number, because the mean of its divisors is an integer number (39774240).

Almost surely, 2^2556878960 is an apocalyptic number.

2556878960 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 2556878960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3181939200).

2556878960 is an abundant number, since it is smaller than the sum of its proper divisors (3806999440).

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

2556878960 is a wasteful number, since it uses less digits than its factorization.

2556878960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 56.

The square root of 2556878960 is about 50565.5906719184. The cubic root of 2556878960 is about 1367.4246038374.

The spelling of 2556878960 in words is "two billion, five hundred fifty-six million, eight hundred seventy-eight thousand, nine hundred sixty".