258556000049 has 4 divisors (see below), whose sum is σ = 258557183040. Its totient is φ = 258554817060.

The previous prime is 258556000039. The next prime is 258556000063. The reversal of 258556000049 is 940000655852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 258556000049 - 2³⁶ = 189836523313 is a prime.

It is a super-2 number, since 2×258556000049² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258555999973 and 258556000009.

It is not an unprimeable number, because it can be changed into a prime (258556000009) 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, 157517 + ... + 736154.

It is an arithmetic number, because the mean of its divisors is an integer number (64639295760).

Almost surely, 2^258556000049 is an apocalyptic number.

It is an amenable number.

258556000049 is a deficient number, since it is larger than the sum of its proper divisors (1182991).

258556000049 is an equidigital number, since it uses as much as digits as its factorization.

258556000049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182990.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 258556000049 in words is "two hundred fifty-eight billion, five hundred fifty-six million, forty-nine", and thus it is an aban number.