12639134485 has 8 divisors (see below), whose sum is σ = 15489662976. Its totient is φ = 9896173200.

The previous prime is 12639134479. The next prime is 12639134491. The reversal of 12639134485 is 58443193621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12639134479) and next prime (12639134491).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12639134485 - 2³ = 12639134477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26891541 + ... + 26892010.

It is an arithmetic number, because the mean of its divisors is an integer number (1936207872).

Almost surely, 2^12639134485 is an apocalyptic number.

It is an amenable number.

12639134485 is a deficient number, since it is larger than the sum of its proper divisors (2850528491).

12639134485 is an equidigital number, since it uses as much as digits as its factorization.

12639134485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53783603.

The product of its digits is 622080, while the sum is 46.

The spelling of 12639134485 in words is "twelve billion, six hundred thirty-nine million, one hundred thirty-four thousand, four hundred eighty-five".