258844273397 has 2 divisors, whose sum is σ = 258844273398. Its totient is φ = 258844273396.

The previous prime is 258844273367. The next prime is 258844273417. The reversal of 258844273397 is 793372448852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251436056356 + 7408217041 = 501434^2 + 86071^2 .

It is a cyclic number.

It is not a de Polignac number, because 258844273397 - 2²⁸ = 258575837941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258844273357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129422136698 + 129422136699.

It is an arithmetic number, because the mean of its divisors is an integer number (129422136699).

Almost surely, 2^258844273397 is an apocalyptic number.

It is an amenable number.

258844273397 is a deficient number, since it is larger than the sum of its proper divisors (1).

258844273397 is an equidigital number, since it uses as much as digits as its factorization.

258844273397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 62.

The spelling of 258844273397 in words is "two hundred fifty-eight billion, eight hundred forty-four million, two hundred seventy-three thousand, three hundred ninety-seven".