12783747673 has 4 divisors (see below), whose sum is σ = 12791704320. Its totient is φ = 12775791028.

The previous prime is 12783747671. The next prime is 12783747679. The reversal of 12783747673 is 37674738721.

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 a cyclic number.

It is not a de Polignac number, because 12783747673 - 2¹ = 12783747671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12783747671) 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, 3975913 + ... + 3979126.

It is an arithmetic number, because the mean of its divisors is an integer number (3197926080).

Almost surely, 2^12783747673 is an apocalyptic number.

It is an amenable number.

12783747673 is a deficient number, since it is larger than the sum of its proper divisors (7956647).

12783747673 is an equidigital number, since it uses as much as digits as its factorization.

12783747673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7956646.

The product of its digits is 8297856, while the sum is 55.

The spelling of 12783747673 in words is "twelve billion, seven hundred eighty-three million, seven hundred forty-seven thousand, six hundred seventy-three".