12969404426 has 16 divisors (see below), whose sum is σ = 21582370080. Its totient is φ = 5795264880.

The previous prime is 12969404423. The next prime is 12969404443. The reversal of 12969404426 is 62440496921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12969404423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4994621 + ... + 4997216.

It is an arithmetic number, because the mean of its divisors is an integer number (1348898130).

Almost surely, 2^12969404426 is an apocalyptic number.

12969404426 is a deficient number, since it is larger than the sum of its proper divisors (8612965654).

12969404426 is a wasteful number, since it uses less digits than its factorization.

12969404426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991909.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 12969404426 in words is "twelve billion, nine hundred sixty-nine million, four hundred four thousand, four hundred twenty-six".