66693709110 has 64 divisors (see below), whose sum is σ = 186382881792. Its totient is φ = 14956646016.

The previous prime is 66693709087. The next prime is 66693709127. The reversal of 66693709110 is 1190739666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66693709110.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2984994 + ... + 3007253.

It is an arithmetic number, because the mean of its divisors is an integer number (2912232528).

Almost surely, 2^66693709110 is an apocalyptic number.

66693709110 is an abundant number, since it is smaller than the sum of its proper divisors (119689172682).

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

66693709110 is a wasteful number, since it uses less digits than its factorization.

66693709110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992317.

The product of its (nonzero) digits is 367416, while the sum is 48.

The spelling of 66693709110 in words is "sixty-six billion, six hundred ninety-three million, seven hundred nine thousand, one hundred ten".