12660136851 has 8 divisors (see below), whose sum is σ = 16896247744. Its totient is φ = 8432058600.

The previous prime is 12660136837. The next prime is 12660136873. The reversal of 12660136851 is 15863106621.

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

It is not a de Polignac number, because 12660136851 - 2⁶ = 12660136787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12660136051) 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, 2004481 + ... + 2010786.

It is an arithmetic number, because the mean of its divisors is an integer number (2112030968).

Almost surely, 2^12660136851 is an apocalyptic number.

12660136851 is a deficient number, since it is larger than the sum of its proper divisors (4236110893).

12660136851 is a wasteful number, since it uses less digits than its factorization.

12660136851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016321.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 12660136851 in words is "twelve billion, six hundred sixty million, one hundred thirty-six thousand, eight hundred fifty-one".