258478679227 has 2 divisors, whose sum is σ = 258478679228. Its totient is φ = 258478679226.

The previous prime is 258478679219. The next prime is 258478679243. The reversal of 258478679227 is 722976874852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258478679227 - 2³ = 258478679219 is a prime.

It is a super-2 number, since 2×258478679227² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (258478679267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129239339613 + 129239339614.

It is an arithmetic number, because the mean of its divisors is an integer number (129239339614).

Almost surely, 2^258478679227 is an apocalyptic number.

258478679227 is a deficient number, since it is larger than the sum of its proper divisors (1).

258478679227 is an equidigital number, since it uses as much as digits as its factorization.

258478679227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189665280, while the sum is 67.

The spelling of 258478679227 in words is "two hundred fifty-eight billion, four hundred seventy-eight million, six hundred seventy-nine thousand, two hundred twenty-seven".