12906878399 has 8 divisors (see below), whose sum is σ = 12987985920. Its totient is φ = 12825816696.

The previous prime is 12906878377. The next prime is 12906878441. The reversal of 12906878399 is 99387860921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12906878399 - 2²⁴ = 12890101183 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 (12906878339) 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 7 ways as a sum of consecutive naturals, for example, 685262 + ... + 703844.

It is an arithmetic number, because the mean of its divisors is an integer number (1623498240).

Almost surely, 2^12906878399 is an apocalyptic number.

12906878399 is a deficient number, since it is larger than the sum of its proper divisors (81107521).

12906878399 is a wasteful number, since it uses less digits than its factorization.

12906878399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22909.

The product of its (nonzero) digits is 11757312, while the sum is 62.

The spelling of 12906878399 in words is "twelve billion, nine hundred six million, eight hundred seventy-eight thousand, three hundred ninety-nine".