66880213110 has 64 divisors (see below), whose sum is σ = 182697197760. Its totient is φ = 17399727360.

The previous prime is 66880213091. The next prime is 66880213117. The reversal of 66880213110 is 1131208866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66880213117) 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 31 ways as a sum of consecutive naturals, for example, 3009717 + ... + 3031856.

It is an arithmetic number, because the mean of its divisors is an integer number (2854643715).

Almost surely, 2^66880213110 is an apocalyptic number.

66880213110 is an abundant number, since it is smaller than the sum of its proper divisors (115816984650).

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

66880213110 is a wasteful number, since it uses less digits than its factorization.

66880213110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6041630 (or 6041624 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 66880213110 in words is "sixty-six billion, eight hundred eighty million, two hundred thirteen thousand, one hundred ten".