12746680519 has 4 divisors (see below), whose sum is σ = 12767890240. Its totient is φ = 12725470800.

The previous prime is 12746680517. The next prime is 12746680549. The reversal of 12746680519 is 91508664721.

It is a happy number.

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 12746680519 - 2¹ = 12746680517 is a prime.

It is a super-2 number, since 2×12746680519² (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 (12746680517) 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, 10603959 + ... + 10605160.

It is an arithmetic number, because the mean of its divisors is an integer number (3191972560).

Almost surely, 2^12746680519 is an apocalyptic number.

12746680519 is a deficient number, since it is larger than the sum of its proper divisors (21209721).

12746680519 is an equidigital number, since it uses as much as digits as its factorization.

12746680519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21209720.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 12746680519 in words is "twelve billion, seven hundred forty-six million, six hundred eighty thousand, five hundred nineteen".