12673445709 has 4 divisors (see below), whose sum is σ = 16897927616. Its totient is φ = 8448963804.

The previous prime is 12673445693. The next prime is 12673445737. The reversal of 12673445709 is 90754437621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12673445709 - 2⁴ = 12673445693 is a prime.

It is a super-2 number, since 2×12673445709² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12673445749) 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, 2112240949 + ... + 2112240954.

It is an arithmetic number, because the mean of its divisors is an integer number (4224481904).

Almost surely, 2^12673445709 is an apocalyptic number.

It is an amenable number.

12673445709 is a deficient number, since it is larger than the sum of its proper divisors (4224481907).

12673445709 is an equidigital number, since it uses as much as digits as its factorization.

12673445709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224481906.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 12673445709 in words is "twelve billion, six hundred seventy-three million, four hundred forty-five thousand, seven hundred nine".