12136639547 has 8 divisors (see below), whose sum is σ = 12367483920. Its totient is φ = 11905863840.

The previous prime is 12136639429. The next prime is 12136639561. The reversal of 12136639547 is 74593663121.

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

It is a cyclic number.

It is not a de Polignac number, because 12136639547 - 2¹² = 12136635451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12136639597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469229 + ... + 494417.

It is an arithmetic number, because the mean of its divisors is an integer number (1545935490).

Almost surely, 2^12136639547 is an apocalyptic number.

12136639547 is a deficient number, since it is larger than the sum of its proper divisors (230844373).

12136639547 is an equidigital number, since it uses as much as digits as its factorization.

12136639547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34333.

The product of its digits is 816480, while the sum is 47.

The spelling of 12136639547 in words is "twelve billion, one hundred thirty-six million, six hundred thirty-nine thousand, five hundred forty-seven".