258478679243 has 2 divisors, whose sum is σ = 258478679244. Its totient is φ = 258478679242.

The previous prime is 258478679227. The next prime is 258478679267. The reversal of 258478679243 is 342976874852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258478679243 - 2⁴ = 258478679227 is a prime.

It is a super-2 number, since 2×258478679243² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 258478679243.

It is not a weakly prime, because it can be changed into another prime (258478679273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129239339621 + 129239339622.

It is an arithmetic number, because the mean of its divisors is an integer number (129239339622).

Almost surely, 2^258478679243 is an apocalyptic number.

258478679243 is a deficient number, since it is larger than the sum of its proper divisors (1).

258478679243 is an equidigital number, since it uses as much as digits as its factorization.

258478679243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162570240, while the sum is 65.

The spelling of 258478679243 in words is "two hundred fifty-eight billion, four hundred seventy-eight million, six hundred seventy-nine thousand, two hundred forty-three".