66143234166 has 32 divisors (see below), whose sum is σ = 133607335680. Its totient is φ = 21827717664.

The previous prime is 66143234119. The next prime is 66143234167.

66143234166 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66143234167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2634400 + ... + 2659388.

It is an arithmetic number, because the mean of its divisors is an integer number (4175229240).

Almost surely, 2^66143234166 is an apocalyptic number.

66143234166 is an abundant number, since it is smaller than the sum of its proper divisors (67464101514).

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

66143234166 is a wasteful number, since it uses less digits than its factorization.

66143234166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29380.

The product of its digits is 373248, while the sum is 42.

The spelling of 66143234166 in words is "sixty-six billion, one hundred forty-three million, two hundred thirty-four thousand, one hundred sixty-six".