258186839087 has 2 divisors, whose sum is σ = 258186839088. Its totient is φ = 258186839086.

The previous prime is 258186839069. The next prime is 258186839093. The reversal of 258186839087 is 780938681852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258186839087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258186839587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129093419543 + 129093419544.

It is an arithmetic number, because the mean of its divisors is an integer number (129093419544).

Almost surely, 2^258186839087 is an apocalyptic number.

258186839087 is a deficient number, since it is larger than the sum of its proper divisors (1).

258186839087 is an equidigital number, since it uses as much as digits as its factorization.

258186839087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46448640, while the sum is 65.

The spelling of 258186839087 in words is "two hundred fifty-eight billion, one hundred eighty-six million, eight hundred thirty-nine thousand, eighty-seven".