20567021006166 has 16 divisors (see below), whose sum is σ = 41159169730224. Its totient is φ = 6851485715744.

The previous prime is 20567021006149. The next prime is 20567021006179. The reversal of 20567021006166 is 66160012076502.

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, 1046977605 + ... + 1046997248.

It is an arithmetic number, because the mean of its divisors is an integer number (2572448108139).

Almost surely, 2^{20567021006166} is an apocalyptic number.

20567021006166 is an abundant number, since it is smaller than the sum of its proper divisors (20592148724058).

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

20567021006166 is a wasteful number, since it uses less digits than its factorization.

20567021006166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093976495.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 20567021006166 in words is "twenty trillion, five hundred sixty-seven billion, twenty-one million, six thousand, one hundred sixty-six".