66208189110 has 64 divisors (see below), whose sum is σ = 181620652032. Its totient is φ = 15131546496.

The previous prime is 66208189081. The next prime is 66208189133. The reversal of 66208189110 is 1198180266.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 2921784 + ... + 2944356.

It is an arithmetic number, because the mean of its divisors is an integer number (2837822688).

Almost surely, 2^66208189110 is an apocalyptic number.

66208189110 is an abundant number, since it is smaller than the sum of its proper divisors (115412462922).

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

66208189110 is a wasteful number, since it uses less digits than its factorization.

66208189110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36557.

The product of its (nonzero) digits is 41472, while the sum is 42.

The spelling of 66208189110 in words is "sixty-six billion, two hundred eight million, one hundred eighty-nine thousand, one hundred ten".