2558242763 has 2 divisors, whose sum is σ = 2558242764. Its totient is φ = 2558242762.

The previous prime is 2558242747. The next prime is 2558242769. The reversal of 2558242763 is 3672428552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2558242763 - 2⁴ = 2558242747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2558242769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279121381 + 1279121382.

It is an arithmetic number, because the mean of its divisors is an integer number (1279121382).

Almost surely, 2^2558242763 is an apocalyptic number.

2558242763 is a deficient number, since it is larger than the sum of its proper divisors (1).

2558242763 is an equidigital number, since it uses as much as digits as its factorization.

2558242763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 44.

The square root of 2558242763 is about 50579.0743588690. The cubic root of 2558242763 is about 1367.6676822589.

The spelling of 2558242763 in words is "two billion, five hundred fifty-eight million, two hundred forty-two thousand, seven hundred sixty-three".