18066320264 has 8 divisors (see below), whose sum is σ = 33874350510. Its totient is φ = 9033160128.

The previous prime is 18066320231. The next prime is 18066320273. The reversal of 18066320264 is 46202366081.

It can be written as a sum of positive squares in only one way, i.e., 17468908900 + 597411364 = 132170^2 + 24442^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129145009 + ... + 1129145024.

Almost surely, 2^18066320264 is an apocalyptic number.

It is an amenable number.

18066320264 is a deficient number, since it is larger than the sum of its proper divisors (15808030246).

18066320264 is a wasteful number, since it uses less digits than its factorization.

18066320264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258290039 (or 2258290035 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 18066320264 in words is "eighteen billion, sixty-six million, three hundred twenty thousand, two hundred sixty-four".