12013478399 has 24 divisors (see below), whose sum is σ = 13109461200. Its totient is φ = 11003865600.

The previous prime is 12013478377. The next prime is 12013478471. The reversal of 12013478399 is 99387431021.

It is a de Polignac number, because none of the positive numbers 2^k-12013478399 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 (12013478999) 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 23 ways as a sum of consecutive naturals, for example, 18229532 + ... + 18230190.

It is an arithmetic number, because the mean of its divisors is an integer number (546227550).

Almost surely, 2^12013478399 is an apocalyptic number.

12013478399 is a deficient number, since it is larger than the sum of its proper divisors (1095982801).

12013478399 is a wasteful number, since it uses less digits than its factorization.

12013478399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 12013478399 in words is "twelve billion, thirteen million, four hundred seventy-eight thousand, three hundred ninety-nine".