13550631121266 has 16 divisors (see below), whose sum is σ = 27104646189600. Its totient is φ = 4516313049248.

The previous prime is 13550631121259. The next prime is 13550631121273. The reversal of 13550631121266 is 66212113605531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13550631121259) and next prime (13550631121273).

It is a Curzon number.

It is an unprimeable number.

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, 140945736 + ... + 141041843.

It is an arithmetic number, because the mean of its divisors is an integer number (1694040386850).

Almost surely, 2^{13550631121266} is an apocalyptic number.

13550631121266 is an abundant number, since it is smaller than the sum of its proper divisors (13554015068334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13550631121266 is a wasteful number, since it uses less digits than its factorization.

13550631121266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281995593.

The product of its (nonzero) digits is 194400, while the sum is 42.

Adding to 13550631121266 its reverse (66212113605531), we get a palindrome (79762744726797).

The spelling of 13550631121266 in words is "thirteen trillion, five hundred fifty billion, six hundred thirty-one million, one hundred twenty-one thousand, two hundred sixty-six".