12826705623 has 4 divisors (see below), whose sum is σ = 17102274168. Its totient is φ = 8551137080.

The previous prime is 12826705601. The next prime is 12826705673. The reversal of 12826705623 is 32650762821.

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 12826705623 - 2¹⁸ = 12826443479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12826705673) 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, 2137784268 + ... + 2137784273.

It is an arithmetic number, because the mean of its divisors is an integer number (4275568542).

Almost surely, 2^12826705623 is an apocalyptic number.

12826705623 is a deficient number, since it is larger than the sum of its proper divisors (4275568545).

12826705623 is an equidigital number, since it uses as much as digits as its factorization.

12826705623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275568544.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 12826705623 in words is "twelve billion, eight hundred twenty-six million, seven hundred five thousand, six hundred twenty-three".