12866823294 has 32 divisors (see below), whose sum is σ = 29171748480. Its totient is φ = 3750652512.

The previous prime is 12866823293. The next prime is 12866823329. The reversal of 12866823294 is 49232866821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866823293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4339552 + ... + 4342515.

It is an arithmetic number, because the mean of its divisors is an integer number (911617140).

Almost surely, 2^12866823294 is an apocalyptic number.

12866823294 is an abundant number, since it is smaller than the sum of its proper divisors (16304925186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12866823294 is a wasteful number, since it uses less digits than its factorization.

12866823294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682104.

The product of its digits is 1990656, while the sum is 51.

The spelling of 12866823294 in words is "twelve billion, eight hundred sixty-six million, eight hundred twenty-three thousand, two hundred ninety-four".