258273312491 has 2 divisors, whose sum is σ = 258273312492. Its totient is φ = 258273312490.

The previous prime is 258273312457. The next prime is 258273312499. The reversal of 258273312491 is 194213372852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258273312491 - 2²⁶ = 258206203627 is a prime.

It is not a weakly prime, because it can be changed into another prime (258273312499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129136656245 + 129136656246.

It is an arithmetic number, because the mean of its divisors is an integer number (129136656246).

Almost surely, 2^258273312491 is an apocalyptic number.

258273312491 is a deficient number, since it is larger than the sum of its proper divisors (1).

258273312491 is an equidigital number, since it uses as much as digits as its factorization.

258273312491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The spelling of 258273312491 in words is "two hundred fifty-eight billion, two hundred seventy-three million, three hundred twelve thousand, four hundred ninety-one".