258203242465 has 16 divisors (see below), whose sum is σ = 366317902080. Its totient is φ = 170948352960.

The previous prime is 258203242439. The next prime is 258203242471. The reversal of 258203242465 is 564242302852.

It is not a de Polignac number, because 258203242465 - 2¹⁷ = 258203111393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127192701 + ... + 127194730.

It is an arithmetic number, because the mean of its divisors is an integer number (22894868880).

Almost surely, 2^258203242465 is an apocalyptic number.

It is an amenable number.

258203242465 is a deficient number, since it is larger than the sum of its proper divisors (108114659615).

258203242465 is a wasteful number, since it uses less digits than its factorization.

258203242465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254387472.

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 258203242465 in words is "two hundred fifty-eight billion, two hundred three million, two hundred forty-two thousand, four hundred sixty-five".