66020202646606 has 16 divisors (see below), whose sum is σ = 106648309250784. Its totient is φ = 30470780019744.

The previous prime is 66020202646589. The next prime is 66020202646621. The reversal of 66020202646606 is 60664620202066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6897375 + ... + 13402021.

It is an arithmetic number, because the mean of its divisors is an integer number (6665519328174).

Almost surely, 2^{66020202646606} is an apocalyptic number.

66020202646606 is a deficient number, since it is larger than the sum of its proper divisors (40628106604178).

66020202646606 is a wasteful number, since it uses less digits than its factorization.

66020202646606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6895035.

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 66020202646606 in words is "sixty-six trillion, twenty billion, two hundred two million, six hundred forty-six thousand, six hundred six".