18166569304968 has 64 divisors (see below), whose sum is σ = 57671648592000. Its totient is φ = 5190448372416.

The previous prime is 18166569304967. The next prime is 18166569304993. The reversal of 18166569304968 is 86940396566181.

18166569304968 is a `hidden beast` number, since 1 + 8 + 16 + 6 + 569 + 3 + 0 + 49 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 18166569304896 and 18166569304905.

It is not an unprimeable number, because it can be changed into a prime (18166569304967) 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, 6007461883 + ... + 6007464906.

It is an arithmetic number, because the mean of its divisors is an integer number (901119509250).

Almost surely, 2^{18166569304968} is an apocalyptic number.

18166569304968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18166569304968 is an abundant number, since it is smaller than the sum of its proper divisors (39505079287032).

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

18166569304968 is a wasteful number, since it uses less digits than its factorization.

18166569304968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12014926811 (or 12014926801 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 72.

The spelling of 18166569304968 in words is "eighteen trillion, one hundred sixty-six billion, five hundred sixty-nine million, three hundred four thousand, nine hundred sixty-eight".