20660066400086 has 16 divisors (see below), whose sum is σ = 32679099172800. Its totient is φ = 9768964732488.

The previous prime is 20660066400047. The next prime is 20660066400097. The reversal of 20660066400086 is 68000466006602.

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, 482825816 + ... + 482868603.

It is an arithmetic number, because the mean of its divisors is an integer number (2042443698300).

Almost surely, 2^{20660066400086} is an apocalyptic number.

20660066400086 is a deficient number, since it is larger than the sum of its proper divisors (12019032772714).

20660066400086 is a wasteful number, since it uses less digits than its factorization.

20660066400086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965695003.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 20660066400086 in words is "twenty trillion, six hundred sixty billion, sixty-six million, four hundred thousand, eighty-six".