258221820159 has 8 divisors (see below), whose sum is σ = 382550844720. Its totient is φ = 172147880088.

The previous prime is 258221820091. The next prime is 258221820169. The reversal of 258221820159 is 951028122852.

258221820159 is a `hidden beast` number, since 2 + 582 + 2 + 18 + 2 + 0 + 1 + 59 = 666.

It is not a de Polignac number, because 258221820159 - 2²⁷ = 258087602431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258221820169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4781885532 + ... + 4781885585.

It is an arithmetic number, because the mean of its divisors is an integer number (47818855590).

Almost surely, 2^258221820159 is an apocalyptic number.

258221820159 is a deficient number, since it is larger than the sum of its proper divisors (124329024561).

258221820159 is an equidigital number, since it uses as much as digits as its factorization.

258221820159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9563771126 (or 9563771120 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 258221820159 in words is "two hundred fifty-eight billion, two hundred twenty-one million, eight hundred twenty thousand, one hundred fifty-nine".