12799999951 has 4 divisors (see below), whose sum is σ = 13356521712. Its totient is φ = 12243478192.

The previous prime is 12799999921. The next prime is 12799999957. The reversal of 12799999951 is 15999999721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15999999721 = 40879 ⋅391399.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12799999951 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 (12799999957) 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, 278260846 + ... + 278260891.

It is an arithmetic number, because the mean of its divisors is an integer number (3339130428).

Almost surely, 2^12799999951 is an apocalyptic number.

12799999951 is a deficient number, since it is larger than the sum of its proper divisors (556521761).

12799999951 is an equidigital number, since it uses as much as digits as its factorization.

12799999951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556521760.

The product of its digits is 37200870, while the sum is 70.

The spelling of 12799999951 in words is "twelve billion, seven hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-one".