258668754457 has 2 divisors, whose sum is σ = 258668754458. Its totient is φ = 258668754456.

The previous prime is 258668754437. The next prime is 258668754473. The reversal of 258668754457 is 754457866852.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199644537856 + 59024216601 = 446816^2 + 242949^2 .

It is a cyclic number.

It is not a de Polignac number, because 258668754457 - 2¹¹ = 258668752409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 258668754392 and 258668754401.

It is not a weakly prime, because it can be changed into another prime (258668754437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129334377228 + 129334377229.

It is an arithmetic number, because the mean of its divisors is an integer number (129334377229).

Almost surely, 2^258668754457 is an apocalyptic number.

It is an amenable number.

258668754457 is a deficient number, since it is larger than the sum of its proper divisors (1).

258668754457 is an equidigital number, since it uses as much as digits as its factorization.

258668754457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584000, while the sum is 67.

The spelling of 258668754457 in words is "two hundred fifty-eight billion, six hundred sixty-eight million, seven hundred fifty-four thousand, four hundred fifty-seven".