258742574187 has 4 divisors (see below), whose sum is σ = 344990098920. Its totient is φ = 172495049456.

The previous prime is 258742574143. The next prime is 258742574227. The reversal of 258742574187 is 781475247852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 258742574187 - 2¹² = 258742570091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 258742574187.

It is not an unprimeable number, because it can be changed into a prime (258742574087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43123762362 + ... + 43123762367.

It is an arithmetic number, because the mean of its divisors is an integer number (86247524730).

Almost surely, 2^258742574187 is an apocalyptic number.

258742574187 is a deficient number, since it is larger than the sum of its proper divisors (86247524733).

258742574187 is an equidigital number, since it uses as much as digits as its factorization.

258742574187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86247524732.

The product of its digits is 35123200, while the sum is 60.

The spelling of 258742574187 in words is "two hundred fifty-eight billion, seven hundred forty-two million, five hundred seventy-four thousand, one hundred eighty-seven".