66301838018 has 32 divisors (see below), whose sum is σ = 112780080000. Its totient is φ = 28979963136.

The previous prime is 66301838003. The next prime is 66301838051. The reversal of 66301838018 is 81083810366.

It is a super-2 number, since 2×66301838018² (a number of 22 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 66301838018.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459130 + ... + 1503882.

It is an arithmetic number, because the mean of its divisors is an integer number (3524377500).

Almost surely, 2^66301838018 is an apocalyptic number.

66301838018 is a deficient number, since it is larger than the sum of its proper divisors (46478241982).

66301838018 is a wasteful number, since it uses less digits than its factorization.

66301838018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47786.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 66301838018 in words is "sixty-six billion, three hundred one million, eight hundred thirty-eight thousand, eighteen".