12663872101 has 4 divisors (see below), whose sum is σ = 13408805772. Its totient is φ = 11918938432.

The previous prime is 12663872069. The next prime is 12663872113. The reversal of 12663872101 is 10127836621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5737305025 + 6926567076 = 75745^2 + 83226^2 .

It is a cyclic number.

It is not a de Polignac number, because 12663872101 - 2⁵ = 12663872069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663872161) 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 3 ways as a sum of consecutive naturals, for example, 372466810 + ... + 372466843.

It is an arithmetic number, because the mean of its divisors is an integer number (3352201443).

Almost surely, 2^12663872101 is an apocalyptic number.

It is an amenable number.

12663872101 is a deficient number, since it is larger than the sum of its proper divisors (744933671).

12663872101 is an equidigital number, since it uses as much as digits as its factorization.

12663872101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744933670.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 12663872101 in words is "twelve billion, six hundred sixty-three million, eight hundred seventy-two thousand, one hundred one".