66606202446220 has 96 divisors (see below), whose sum is σ = 142397500492800. Its totient is φ = 26164877022720.

The previous prime is 66606202446209. The next prime is 66606202446229. The reversal of 66606202446220 is 2264420260666.

66606202446220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66606202446220² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66606202446229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 672176799 + ... + 672275881.

It is an arithmetic number, because the mean of its divisors is an integer number (1483307296800).

Almost surely, 2^{66606202446220} is an apocalyptic number.

It is an amenable number.

66606202446220 is an abundant number, since it is smaller than the sum of its proper divisors (75791298046580).

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

66606202446220 is a wasteful number, since it uses less digits than its factorization.

66606202446220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101135 (or 101133 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 66606202446220 in words is "sixty-six trillion, six hundred six billion, two hundred two million, four hundred forty-six thousand, two hundred twenty".