12289415639 has 4 divisors (see below), whose sum is σ = 12319463520. Its totient is φ = 12259367760.

The previous prime is 12289415629. The next prime is 12289415647. The reversal of 12289415639 is 93651498221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93651498221 = 1667 ⋅56179663.

It is a cyclic number.

It is not a de Polignac number, because 12289415639 - 2²⁸ = 12020980183 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 (12289415629) 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, 15023327 + ... + 15024144.

It is an arithmetic number, because the mean of its divisors is an integer number (3079865880).

Almost surely, 2^12289415639 is an apocalyptic number.

12289415639 is a deficient number, since it is larger than the sum of its proper divisors (30047881).

12289415639 is an equidigital number, since it uses as much as digits as its factorization.

12289415639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30047880.

The product of its digits is 933120, while the sum is 50.

The spelling of 12289415639 in words is "twelve billion, two hundred eighty-nine million, four hundred fifteen thousand, six hundred thirty-nine".