12989613013 has 4 divisors (see below), whose sum is σ = 13988814028. Its totient is φ = 11990412000.

The previous prime is 12989612953. The next prime is 12989613019. The reversal of 12989613013 is 31031698921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31031698921 = 2393 ⋅12967697.

It can be written as a sum of positive squares in 2 ways, for example, as 5610459409 + 7379153604 = 74903^2 + 85902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12989613013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12989613019) 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, 499600488 + ... + 499600513.

It is an arithmetic number, because the mean of its divisors is an integer number (3497203507).

Almost surely, 2^12989613013 is an apocalyptic number.

12989613013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12989613013 is a deficient number, since it is larger than the sum of its proper divisors (999201015).

12989613013 is an equidigital number, since it uses as much as digits as its factorization.

12989613013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999201014.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 12989613013 in words is "twelve billion, nine hundred eighty-nine million, six hundred thirteen thousand, thirteen".