258379844677 has 4 divisors (see below), whose sum is σ = 263254936140. Its totient is φ = 253504753216.

The previous prime is 258379844651. The next prime is 258379844687. The reversal of 258379844677 is 776448973852.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84498350596 + 173881494081 = 290686^2 + 416991^2 .

It is a cyclic number.

It is not a de Polignac number, because 258379844677 - 2²⁷ = 258245626949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258379844687) 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, 2437545652 + ... + 2437545757.

It is an arithmetic number, because the mean of its divisors is an integer number (65813734035).

Almost surely, 2^258379844677 is an apocalyptic number.

It is an amenable number.

258379844677 is a deficient number, since it is larger than the sum of its proper divisors (4875091463).

258379844677 is an equidigital number, since it uses as much as digits as its factorization.

258379844677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4875091462.

The product of its digits is 568995840, while the sum is 70.

The spelling of 258379844677 in words is "two hundred fifty-eight billion, three hundred seventy-nine million, eight hundred forty-four thousand, six hundred seventy-seven".