13550244166 has 4 divisors (see below), whose sum is σ = 20325366252. Its totient is φ = 6775122082.

The previous prime is 13550244163. The next prime is 13550244199. The reversal of 13550244166 is 66144205531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66144205531 = 191 ⋅346304741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550244163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3387561040 + ... + 3387561043.

It is an arithmetic number, because the mean of its divisors is an integer number (5081341563).

Almost surely, 2^13550244166 is an apocalyptic number.

13550244166 is a deficient number, since it is larger than the sum of its proper divisors (6775122086).

13550244166 is an equidigital number, since it uses as much as digits as its factorization.

13550244166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6775122085.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 13550244166 its reverse (66144205531), we get a palindrome (79694449697).

The spelling of 13550244166 in words is "thirteen billion, five hundred fifty million, two hundred forty-four thousand, one hundred sixty-six".