11144628661 has 8 divisors (see below), whose sum is σ = 11230386048. Its totient is φ = 11059200000.

The previous prime is 11144628589. The next prime is 11144628713. The reversal of 11144628661 is 16682644111.

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

It is a 9-Lehmer number, since φ(11144628661) divides (11144628661-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 11144628661 - 2⁷ = 11144628533 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 (11144623661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13900 + ... + 149941.

It is an arithmetic number, because the mean of its divisors is an integer number (1403798256).

Almost surely, 2^11144628661 is an apocalyptic number.

11144628661 is the 47212-nd centered decagonal number.

It is an amenable number.

11144628661 is a deficient number, since it is larger than the sum of its proper divisors (85757387).

11144628661 is a wasteful number, since it uses less digits than its factorization.

11144628661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164363.

The product of its digits is 55296, while the sum is 40.

The spelling of 11144628661 in words is "eleven billion, one hundred forty-four million, six hundred twenty-eight thousand, six hundred sixty-one".