258994815812 has 48 divisors (see below), whose sum is σ = 464325281280. Its totient is φ = 126348304512.

The previous prime is 258994815791. The next prime is 258994815817. The reversal of 258994815812 is 218518499852.

It is not an unprimeable number, because it can be changed into a prime (258994815817) 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 in 15 ways as a sum of consecutive naturals, for example, 127019489 + ... + 127021527.

It is an arithmetic number, because the mean of its divisors is an integer number (9673443360).

Almost surely, 2^258994815812 is an apocalyptic number.

It is an amenable number.

258994815812 is a deficient number, since it is larger than the sum of its proper divisors (205330465468).

258994815812 is a wasteful number, since it uses less digits than its factorization.

258994815812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3860 (or 3858 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 62.

The spelling of 258994815812 in words is "two hundred fifty-eight billion, nine hundred ninety-four million, eight hundred fifteen thousand, eight hundred twelve".