20660062640066 has 16 divisors (see below), whose sum is σ = 31382601690240. Its totient is φ = 10199197310640.

The previous prime is 20660062640059. The next prime is 20660062640089. The reversal of 20660062640066 is 66004626006602.

It is a junction number, because it is equal to n+sod(n) for n = 20660062639999 and 20660062640026.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25983440 + ... + 26766756.

It is an arithmetic number, because the mean of its divisors is an integer number (1961412605640).

Almost surely, 2^{20660062640066} is an apocalyptic number.

20660062640066 is a deficient number, since it is larger than the sum of its proper divisors (10722539050174).

20660062640066 is a wasteful number, since it uses less digits than its factorization.

20660062640066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950329.

The product of its (nonzero) digits is 746496, while the sum is 44.

Adding to 20660062640066 its reverse (66004626006602), we get a palindrome (86664688646668).

The spelling of 20660062640066 in words is "twenty trillion, six hundred sixty billion, sixty-two million, six hundred forty thousand, sixty-six".