2558397679 has 2 divisors, whose sum is σ = 2558397680. Its totient is φ = 2558397678.

The previous prime is 2558397641. The next prime is 2558397683. The reversal of 2558397679 is 9767938552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2558397679 - 2¹³ = 2558389487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2558397619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279198839 + 1279198840.

It is an arithmetic number, because the mean of its divisors is an integer number (1279198840).

Almost surely, 2^2558397679 is an apocalyptic number.

2558397679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2558397679 is an equidigital number, since it uses as much as digits as its factorization.

2558397679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28576800, while the sum is 61.

The square root of 2558397679 is about 50580.6057595201. The cubic root of 2558397679 is about 1367.6952883607.

The spelling of 2558397679 in words is "two billion, five hundred fifty-eight million, three hundred ninety-seven thousand, six hundred seventy-nine".