12698877879 has 12 divisors (see below), whose sum is σ = 18464301232. Its totient is φ = 8409852000.

The previous prime is 12698877871. The next prime is 12698877901. The reversal of 12698877879 is 97877889621.

It is not a de Polignac number, because 12698877879 - 2³ = 12698877871 is a prime.

It is a super-2 number, since 2×12698877879² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12698877871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4670782 + ... + 4673499.

Almost surely, 2^12698877879 is an apocalyptic number.

12698877879 is a deficient number, since it is larger than the sum of its proper divisors (5765423353).

12698877879 is a wasteful number, since it uses less digits than its factorization.

12698877879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344438 (or 9344435 counting only the distinct ones).

The product of its digits is 170698752, while the sum is 72.

The spelling of 12698877879 in words is "twelve billion, six hundred ninety-eight million, eight hundred seventy-seven thousand, eight hundred seventy-nine".