11551121106663 has 16 divisors (see below), whose sum is σ = 15457635143136. Its totient is φ = 7672679178240.

The previous prime is 11551121106643. The next prime is 11551121106689. The reversal of 11551121106663 is 36660112115511.

11551121106663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11551121106663 - 2⁵ = 11551121106631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551121106643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25195603 + ... + 25649963.

It is an arithmetic number, because the mean of its divisors is an integer number (966102196446).

Almost surely, 2^{11551121106663} is an apocalyptic number.

11551121106663 is a deficient number, since it is larger than the sum of its proper divisors (3906514036473).

11551121106663 is a wasteful number, since it uses less digits than its factorization.

11551121106663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485234.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 11551121106663 in words is "eleven trillion, five hundred fifty-one billion, one hundred twenty-one million, one hundred six thousand, six hundred sixty-three".