12599966429 has 8 divisors (see below), whose sum is σ = 13036217760. Its totient is φ = 12163833136.

The previous prime is 12599966389. The next prime is 12599966459. The reversal of 12599966429 is 92466999521.

It is a happy number.

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 12599966429 - 2²⁸ = 12331530973 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 (12599966459) 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, 225002 + ... + 275364.

It is an arithmetic number, because the mean of its divisors is an integer number (1629527220).

Almost surely, 2^12599966429 is an apocalyptic number.

It is an amenable number.

12599966429 is a deficient number, since it is larger than the sum of its proper divisors (436251331).

12599966429 is an equidigital number, since it uses as much as digits as its factorization.

12599966429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59019.

The product of its digits is 18895680, while the sum is 62.

The spelling of 12599966429 in words is "twelve billion, five hundred ninety-nine million, nine hundred sixty-six thousand, four hundred twenty-nine".