18106064663 has 16 divisors (see below), whose sum is σ = 18808504320. Its totient is φ = 17415972000.

The previous prime is 18106064651. The next prime is 18106064671. The reversal of 18106064663 is 36646060181.

It is a cyclic number.

It is not a de Polignac number, because 18106064663 - 2¹⁶ = 18105999127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18106064663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18106004663) 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 15 ways as a sum of consecutive naturals, for example, 1171178 + ... + 1186536.

It is an arithmetic number, because the mean of its divisors is an integer number (1175531520).

Almost surely, 2^18106064663 is an apocalyptic number.

18106064663 is a deficient number, since it is larger than the sum of its proper divisors (702439657).

18106064663 is a wasteful number, since it uses less digits than its factorization.

18106064663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15758.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 18106064663 in words is "eighteen billion, one hundred six million, sixty-four thousand, six hundred sixty-three".