18166333040680 has 32 divisors (see below), whose sum is σ = 44590090191840. Its totient is φ = 6605939287360.

The previous prime is 18166333040677. The next prime is 18166333040689. The reversal of 18166333040680 is 8604033366181.

It is a super-2 number, since 2×18166333040680² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18166333040689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20643559834 + ... + 20643560713.

It is an arithmetic number, because the mean of its divisors is an integer number (1393440318495).

Almost surely, 2^{18166333040680} is an apocalyptic number.

18166333040680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18166333040680 is an abundant number, since it is smaller than the sum of its proper divisors (26423757151160).

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

18166333040680 is a wasteful number, since it uses less digits than its factorization.

18166333040680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41287120569 (or 41287120565 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 18166333040680 in words is "eighteen trillion, one hundred sixty-six billion, three hundred thirty-three million, forty thousand, six hundred eighty".