66707110220 has 96 divisors (see below), whose sum is σ = 160111728000. Its totient is φ = 23192981504.

The previous prime is 66707110219. The next prime is 66707110231. The reversal of 66707110220 is 2201170766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79706 + ... + 373854.

It is an arithmetic number, because the mean of its divisors is an integer number (1667830500).

Almost surely, 2^66707110220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66707110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80055864000).

66707110220 is an abundant number, since it is smaller than the sum of its proper divisors (93404617780).

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

66707110220 is a wasteful number, since it uses less digits than its factorization.

66707110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294227 (or 294225 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

Adding to 66707110220 its reverse (2201170766), we get a palindrome (68908280986).

The spelling of 66707110220 in words is "sixty-six billion, seven hundred seven million, one hundred ten thousand, two hundred twenty".