12129789766 has 8 divisors (see below), whose sum is σ = 18201645000. Its totient is φ = 6062574768.

The previous prime is 12129789743. The next prime is 12129789769. The reversal of 12129789766 is 66798792121.

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

It is a super-3 number, since 3×12129789766³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12129789766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129789769) 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, 1153516 + ... + 1163983.

It is an arithmetic number, because the mean of its divisors is an integer number (2275205625).

Almost surely, 2^12129789766 is an apocalyptic number.

12129789766 is a deficient number, since it is larger than the sum of its proper divisors (6071855234).

12129789766 is a wasteful number, since it uses less digits than its factorization.

12129789766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320118.

The product of its digits is 4572288, while the sum is 58.

The spelling of 12129789766 in words is "twelve billion, one hundred twenty-nine million, seven hundred eighty-nine thousand, seven hundred sixty-six".