20051606166606 has 48 divisors (see below), whose sum is σ = 49653101082624. Its totient is φ = 5728856695632.

The previous prime is 20051606166577. The next prime is 20051606166623. The reversal of 20051606166606 is 60666160615002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1791075 + ... + 6581121.

It is an arithmetic number, because the mean of its divisors is an integer number (1034439605888).

Almost surely, 2^{20051606166606} is an apocalyptic number.

20051606166606 is an abundant number, since it is smaller than the sum of its proper divisors (29601494916018).

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

20051606166606 is a wasteful number, since it uses less digits than its factorization.

20051606166606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823285 (or 4823282 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 20051606166606 in words is "twenty trillion, fifty-one billion, six hundred six million, one hundred sixty-six thousand, six hundred six".