20589017166 has 24 divisors (see below), whose sum is σ = 45451228680. Its totient is φ = 6733514736.

The previous prime is 20589017159. The next prime is 20589017171. The reversal of 20589017166 is 66171098502.

20589017166 is a `hidden beast` number, since 2 + 0 + 589 + 0 + 1 + 7 + 1 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10789936 + ... + 10791843.

It is an arithmetic number, because the mean of its divisors is an integer number (1893801195).

Almost surely, 2^20589017166 is an apocalyptic number.

20589017166 is an abundant number, since it is smaller than the sum of its proper divisors (24862211514).

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

20589017166 is a wasteful number, since it uses less digits than its factorization.

20589017166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21581840 (or 21581837 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 20589017166 in words is "twenty billion, five hundred eighty-nine million, seventeen thousand, one hundred sixty-six".