2568628881 has 64 divisors (see below), whose sum is σ = 4748029440. Its totient is φ = 1336227840.

The previous prime is 2568628859. The next prime is 2568628883. The reversal of 2568628881 is 1888268652.

It is a happy number.

2568628881 is a `hidden beast` number, since 2 + 5 + 6 + 8 + 628 + 8 + 8 + 1 = 666.

It is not a de Polignac number, because 2568628881 - 2¹⁰ = 2568627857 is a prime.

It is a super-2 number, since 2×2568628881² = 13195708656614624322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2568628883) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 172201 + ... + 186521.

It is an arithmetic number, because the mean of its divisors is an integer number (74187960).

Almost surely, 2^2568628881 is an apocalyptic number.

2568628881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2568628881 is a deficient number, since it is larger than the sum of its proper divisors (2179400559).

2568628881 is a wasteful number, since it uses less digits than its factorization.

2568628881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14423 (or 14417 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 54.

The square root of 2568628881 is about 50681.6424457614. The cubic root of 2568628881 is about 1369.5160314786.

The spelling of 2568628881 in words is "two billion, five hundred sixty-eight million, six hundred twenty-eight thousand, eight hundred eighty-one".