12378473999 has 16 divisors (see below), whose sum is σ = 12906915840. Its totient is φ = 11857020000.

The previous prime is 12378473923. The next prime is 12378474037. The reversal of 12378473999 is 99937487321.

It is a cyclic number.

It is not a de Polignac number, because 12378473999 - 2⁸ = 12378473743 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 (12378473909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4776194 + ... + 4778784.

It is an arithmetic number, because the mean of its divisors is an integer number (806682240).

Almost surely, 2^12378473999 is an apocalyptic number.

12378473999 is a deficient number, since it is larger than the sum of its proper divisors (528441841).

12378473999 is a wasteful number, since it uses less digits than its factorization.

12378473999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862.

The product of its digits is 20575296, while the sum is 62.

The spelling of 12378473999 in words is "twelve billion, three hundred seventy-eight million, four hundred seventy-three thousand, nine hundred ninety-nine".