258247929742851 has 4 divisors (see below), whose sum is σ = 344330572990472. Its totient is φ = 172165286495232.

The previous prime is 258247929742813. The next prime is 258247929742861. The reversal of 258247929742851 is 158247929742852.

It is a happy number.

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

It is not a de Polignac number, because 258247929742851 - 2¹⁷ = 258247929611779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258247929742861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43041321623806 + ... + 43041321623811.

It is an arithmetic number, because the mean of its divisors is an integer number (86082643247618).

Almost surely, 2^{258247929742851} is an apocalyptic number.

258247929742851 is a deficient number, since it is larger than the sum of its proper divisors (86082643247621).

258247929742851 is an equidigital number, since it uses as much as digits as its factorization.

258247929742851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86082643247620.

The product of its digits is 1625702400, while the sum is 75.

Subtracting from 258247929742851 its reverse (158247929742852), we obtain a palindrome (99999999999999).

The spelling of 258247929742851 in words is "two hundred fifty-eight trillion, two hundred forty-seven billion, nine hundred twenty-nine million, seven hundred forty-two thousand, eight hundred fifty-one".