258320095499 has 2 divisors, whose sum is σ = 258320095500. Its totient is φ = 258320095498.

The previous prime is 258320095489. The next prime is 258320095507. The reversal of 258320095499 is 994590023852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258320095499 - 2³⁶ = 189600618763 is a prime.

It is a super-2 number, since 2×258320095499² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (258320095409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129160047749 + 129160047750.

It is an arithmetic number, because the mean of its divisors is an integer number (129160047750).

Almost surely, 2^258320095499 is an apocalyptic number.

258320095499 is a deficient number, since it is larger than the sum of its proper divisors (1).

258320095499 is an equidigital number, since it uses as much as digits as its factorization.

258320095499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 258320095499 in words is "two hundred fifty-eight billion, three hundred twenty million, ninety-five thousand, four hundred ninety-nine".