12610399999 has 4 divisors (see below), whose sum is σ = 12610950040. Its totient is φ = 12609849960.

The previous prime is 12610399979. The next prime is 12610400027. The reversal of 12610399999 is 99999301621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12610399999 - 2⁷ = 12610399871 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 (12610399939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239064 + ... + 287005.

It is an arithmetic number, because the mean of its divisors is an integer number (3152737510).

Almost surely, 2^12610399999 is an apocalyptic number.

12610399999 is a deficient number, since it is larger than the sum of its proper divisors (550041).

12610399999 is an equidigital number, since it uses as much as digits as its factorization.

12610399999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550040.

The product of its (nonzero) digits is 2125764, while the sum is 58.

The spelling of 12610399999 in words is "twelve billion, six hundred ten million, three hundred ninety-nine thousand, nine hundred ninety-nine".