12858230549 has 4 divisors (see below), whose sum is σ = 13076166720. Its totient is φ = 12640294380.

The previous prime is 12858230543. The next prime is 12858230557. The reversal of 12858230549 is 94503285821.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 12858230549 - 2³² = 8563263253 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 (12858230543) 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, 108967997 + ... + 108968114.

It is an arithmetic number, because the mean of its divisors is an integer number (3269041680).

Almost surely, 2^12858230549 is an apocalyptic number.

It is an amenable number.

12858230549 is a deficient number, since it is larger than the sum of its proper divisors (217936171).

12858230549 is an equidigital number, since it uses as much as digits as its factorization.

12858230549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217936170.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 12858230549 in words is "twelve billion, eight hundred fifty-eight million, two hundred thirty thousand, five hundred forty-nine".