12806783723 has 4 divisors (see below), whose sum is σ = 13560123960. Its totient is φ = 12053443488.

The previous prime is 12806783719. The next prime is 12806783741. The reversal of 12806783723 is 32738760821.

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 12806783723 - 2² = 12806783719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12806783753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376670093 + ... + 376670126.

It is an arithmetic number, because the mean of its divisors is an integer number (3390030990).

Almost surely, 2^12806783723 is an apocalyptic number.

12806783723 is a deficient number, since it is larger than the sum of its proper divisors (753340237).

12806783723 is an equidigital number, since it uses as much as digits as its factorization.

12806783723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753340236.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 12806783723 in words is "twelve billion, eight hundred six million, seven hundred eighty-three thousand, seven hundred twenty-three".