2568978241 has 2 divisors, whose sum is σ = 2568978242. Its totient is φ = 2568978240.

The previous prime is 2568978233. The next prime is 2568978299. The reversal of 2568978241 is 1428798652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2410319025 + 158659216 = 49095^2 + 12596^2 .

It is a cyclic number.

It is not a de Polignac number, because 2568978241 - 2³ = 2568978233 is a prime.

It is not a weakly prime, because it can be changed into another prime (2568978221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284489120 + 1284489121.

It is an arithmetic number, because the mean of its divisors is an integer number (1284489121).

Almost surely, 2^2568978241 is an apocalyptic number.

It is an amenable number.

2568978241 is a deficient number, since it is larger than the sum of its proper divisors (1).

2568978241 is an equidigital number, since it uses as much as digits as its factorization.

2568978241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 52.

The square root of 2568978241 is about 50685.0889414234. The cubic root of 2568978241 is about 1369.5781180953.

The spelling of 2568978241 in words is "two billion, five hundred sixty-eight million, nine hundred seventy-eight thousand, two hundred forty-one".