12688514279 has 30 divisors (see below), whose sum is σ = 15623529840. Its totient is φ = 10302751368.

The previous prime is 12688514231. The next prime is 12688514323. The reversal of 12688514279 is 97241588621.

It is not a de Polignac number, because 12688514279 - 2²⁴ = 12671737063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12688514279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12688514479) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 859442 + ... + 874080.

It is an arithmetic number, because the mean of its divisors is an integer number (520784328).

Almost surely, 2^12688514279 is an apocalyptic number.

12688514279 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12688514279 is a deficient number, since it is larger than the sum of its proper divisors (2935015561).

12688514279 is an frugal number, since it uses more digits than its factorization.

12688514279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14705 (or 14665 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 53.

The spelling of 12688514279 in words is "twelve billion, six hundred eighty-eight million, five hundred fourteen thousand, two hundred seventy-nine".