12776206345 has 16 divisors (see below), whose sum is σ = 17879241600. Its totient is φ = 8760826032.

The previous prime is 12776206327. The next prime is 12776206357. The reversal of 12776206345 is 54360267721.

It is not a de Polignac number, because 12776206345 - 2¹⁵ = 12776173577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3723127 + ... + 3726556.

It is an arithmetic number, because the mean of its divisors is an integer number (1117452600).

Almost surely, 2^12776206345 is an apocalyptic number.

It is an amenable number.

12776206345 is a deficient number, since it is larger than the sum of its proper divisors (5103035255).

12776206345 is an frugal number, since it uses more digits than its factorization.

12776206345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7449709 (or 7449695 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 12776206345 in words is "twelve billion, seven hundred seventy-six million, two hundred six thousand, three hundred forty-five".