2568881957 has 2 divisors, whose sum is σ = 2568881958. Its totient is φ = 2568881956.

The previous prime is 2568881941. The next prime is 2568881969. The reversal of 2568881957 is 7591888652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2567550241 + 1331716 = 50671^2 + 1154^2 .

It is a cyclic number.

It is not a de Polignac number, because 2568881957 - 2⁴ = 2568881941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2568881896 and 2568881905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2568881057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284440978 + 1284440979.

It is an arithmetic number, because the mean of its divisors is an integer number (1284440979).

Almost surely, 2^2568881957 is an apocalyptic number.

It is an amenable number.

2568881957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2568881957 is an equidigital number, since it uses as much as digits as its factorization.

2568881957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9676800, while the sum is 59.

The square root of 2568881957 is about 50684.1391068251. The cubic root of 2568881957 is about 1369.5610075174.

The spelling of 2568881957 in words is "two billion, five hundred sixty-eight million, eight hundred eighty-one thousand, nine hundred fifty-seven".