12855919207 has 4 divisors (see below), whose sum is σ = 13414872240. Its totient is φ = 12296966176.

The previous prime is 12855919199. The next prime is 12855919243. The reversal of 12855919207 is 70291955821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70291955821 = 43 ⋅1634696647.

It is a cyclic number.

It is not a de Polignac number, because 12855919207 - 2³ = 12855919199 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855919247) 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, 279476482 + ... + 279476527.

It is an arithmetic number, because the mean of its divisors is an integer number (3353718060).

Almost surely, 2^12855919207 is an apocalyptic number.

12855919207 is a deficient number, since it is larger than the sum of its proper divisors (558953033).

12855919207 is an equidigital number, since it uses as much as digits as its factorization.

12855919207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558953032.

The product of its (nonzero) digits is 453600, while the sum is 49.

The spelling of 12855919207 in words is "twelve billion, eight hundred fifty-five million, nine hundred nineteen thousand, two hundred seven".