258256120156 has 6 divisors (see below), whose sum is σ = 451948210280. Its totient is φ = 129128060076.

The previous prime is 258256120117. The next prime is 258256120181. The reversal of 258256120156 is 651021652852.

It is a congruent number.

It is an unprimeable number.

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, 32282015016 + ... + 32282015023.

Almost surely, 2^258256120156 is an apocalyptic number.

It is an amenable number.

258256120156 is a deficient number, since it is larger than the sum of its proper divisors (193692090124).

258256120156 is a wasteful number, since it uses less digits than its factorization.

258256120156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64564030043 (or 64564030041 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 258256120156 in words is "two hundred fifty-eight billion, two hundred fifty-six million, one hundred twenty thousand, one hundred fifty-six".