18066864652 has 12 divisors (see below), whose sum is σ = 31729531176. Its totient is φ = 9001284320.

The previous prime is 18066864637. The next prime is 18066864653. The reversal of 18066864652 is 25646866081.

It is a super-2 number, since 2×18066864652² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18066864652.

It is not an unprimeable number, because it can be changed into a prime (18066864653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8035738 + ... + 8037985.

It is an arithmetic number, because the mean of its divisors is an integer number (2644127598).

Almost surely, 2^18066864652 is an apocalyptic number.

It is an amenable number.

18066864652 is a deficient number, since it is larger than the sum of its proper divisors (13662666524).

18066864652 is a wasteful number, since it uses less digits than its factorization.

18066864652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16074008 (or 16074006 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 18066864652 in words is "eighteen billion, sixty-six million, eight hundred sixty-four thousand, six hundred fifty-two".