12696888849 has 4 divisors (see below), whose sum is σ = 16929185136. Its totient is φ = 8464592564.

The previous prime is 12696888847. The next prime is 12696888851. The reversal of 12696888849 is 94888869621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12696888847) and next prime (12696888851).

It is a cyclic number.

It is not a de Polignac number, because 12696888849 - 2¹ = 12696888847 is a prime.

It is a super-2 number, since 2×12696888849² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12696888847) 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, 2116148139 + ... + 2116148144.

It is an arithmetic number, because the mean of its divisors is an integer number (4232296284).

Almost surely, 2^12696888849 is an apocalyptic number.

It is an amenable number.

12696888849 is a deficient number, since it is larger than the sum of its proper divisors (4232296287).

12696888849 is an equidigital number, since it uses as much as digits as its factorization.

12696888849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232296286.

The product of its digits is 95551488, while the sum is 69.

The spelling of 12696888849 in words is "twelve billion, six hundred ninety-six million, eight hundred eighty-eight thousand, eight hundred forty-nine".