2556915712 has 104 divisors (see below), whose sum is σ = 5687830400. Its totient is φ = 1141309440.

The previous prime is 2556915701. The next prime is 2556915797. The reversal of 2556915712 is 2175196552.

It is a tau number, because it is divible by the number of its divisors (104).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1649914 + ... + 1651462.

Almost surely, 2^2556915712 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 2556915712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2843915200).

2556915712 is an abundant number, since it is smaller than the sum of its proper divisors (3130914688).

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

2556915712 is a wasteful number, since it uses less digits than its factorization.

2556915712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617 (or 1595 counting only the distinct ones).

The product of its digits is 189000, while the sum is 43.

The square root of 2556915712 is about 50565.9540797956. The cubic root of 2556915712 is about 1367.4311554900.

The spelling of 2556915712 in words is "two billion, five hundred fifty-six million, nine hundred fifteen thousand, seven hundred twelve".