12678818051 has 4 divisors (see below), whose sum is σ = 12778651392. Its totient is φ = 12578984712.

The previous prime is 12678818021. The next prime is 12678818077. The reversal of 12678818051 is 15081887621.

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 12678818051 - 2¹⁰ = 12678817027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12678817987 and 12678818005.

It is not an unprimeable number, because it can be changed into a prime (12678818021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49916480 + ... + 49916733.

It is an arithmetic number, because the mean of its divisors is an integer number (3194662848).

Almost surely, 2^12678818051 is an apocalyptic number.

12678818051 is a deficient number, since it is larger than the sum of its proper divisors (99833341).

12678818051 is an equidigital number, since it uses as much as digits as its factorization.

12678818051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99833340.

The product of its (nonzero) digits is 215040, while the sum is 47.

The spelling of 12678818051 in words is "twelve billion, six hundred seventy-eight million, eight hundred eighteen thousand, fifty-one".