18006166560 has 48 divisors (see below), whose sum is σ = 56719426176. Its totient is φ = 4801644288.

The previous prime is 18006166559. The next prime is 18006166579. The reversal of 18006166560 is 6566160081.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18755944 + ... + 18756903.

It is an arithmetic number, because the mean of its divisors is an integer number (1181654712).

Almost surely, 2^18006166560 is an apocalyptic number.

18006166560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18006166560 is an abundant number, since it is smaller than the sum of its proper divisors (38713259616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18006166560 is a wasteful number, since it uses less digits than its factorization.

18006166560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37512865 (or 37512857 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 18006166560 in words is "eighteen billion, six million, one hundred sixty-six thousand, five hundred sixty".