12680745479 has 4 divisors (see below), whose sum is σ = 12859347600. Its totient is φ = 12502143360.

The previous prime is 12680745449. The next prime is 12680745491. The reversal of 12680745479 is 97454708621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97454708621 = 1571 ⋅62033551.

It is a cyclic number.

It is not a de Polignac number, because 12680745479 - 2¹⁶ = 12680679943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12680745479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12680745439) 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, 89300954 + ... + 89301095.

It is an arithmetic number, because the mean of its divisors is an integer number (3214836900).

Almost surely, 2^12680745479 is an apocalyptic number.

12680745479 is a deficient number, since it is larger than the sum of its proper divisors (178602121).

12680745479 is an equidigital number, since it uses as much as digits as its factorization.

12680745479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178602120.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 12680745479 in words is "twelve billion, six hundred eighty million, seven hundred forty-five thousand, four hundred seventy-nine".