2560042817 has 2 divisors, whose sum is σ = 2560042818. Its totient is φ = 2560042816.

The previous prime is 2560042813. The next prime is 2560042819. The reversal of 2560042817 is 7182400652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1594325041 + 965717776 = 39929^2 + 31076^2 .

It is a cyclic number.

It is not a de Polignac number, because 2560042817 - 2² = 2560042813 is a prime.

Together with 2560042819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2560042813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280021408 + 1280021409.

It is an arithmetic number, because the mean of its divisors is an integer number (1280021409).

Almost surely, 2^2560042817 is an apocalyptic number.

It is an amenable number.

2560042817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560042817 is an equidigital number, since it uses as much as digits as its factorization.

2560042817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 2560042817 is about 50596.8656835579. The cubic root of 2560042817 is about 1367.9883839697.

The spelling of 2560042817 in words is "two billion, five hundred sixty million, forty-two thousand, eight hundred seventeen".