12165006638 has 8 divisors (see below), whose sum is σ = 18408992688. Its totient is φ = 6028675744.

The previous prime is 12165006629. The next prime is 12165006643. The reversal of 12165006638 is 83660056121.

12165006638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26913506 + ... + 26913957.

It is an arithmetic number, because the mean of its divisors is an integer number (2301124086).

Almost surely, 2^12165006638 is an apocalyptic number.

12165006638 is a deficient number, since it is larger than the sum of its proper divisors (6243986050).

12165006638 is a wasteful number, since it uses less digits than its factorization.

12165006638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53827578.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 12165006638 in words is "twelve billion, one hundred sixty-five million, six thousand, six hundred thirty-eight".