20321066330166 has 32 divisors (see below), whose sum is σ = 46450240462080. Its totient is φ = 5805757845216.

The previous prime is 20321066330141. The next prime is 20321066330177. The reversal of 20321066330166 is 66103366012302.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9933421 + ... + 11803176.

It is an arithmetic number, because the mean of its divisors is an integer number (1451570014440).

Almost surely, 2^{20321066330166} is an apocalyptic number.

20321066330166 is an abundant number, since it is smaller than the sum of its proper divisors (26129174131914).

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

20321066330166 is a wasteful number, since it uses less digits than its factorization.

20321066330166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21758868.

The product of its (nonzero) digits is 139968, while the sum is 39.

The spelling of 20321066330166 in words is "twenty trillion, three hundred twenty-one billion, sixty-six million, three hundred thirty thousand, one hundred sixty-six".