201323043066 has 32 divisors (see below), whose sum is σ = 404097261120. Its totient is φ = 66865906944.

The previous prime is 201323043059. The next prime is 201323043107. The reversal of 201323043066 is 660340323102.

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, 15469170 + ... + 15482178.

It is an arithmetic number, because the mean of its divisors is an integer number (12628039410).

Almost surely, 2^201323043066 is an apocalyptic number.

201323043066 is an abundant number, since it is smaller than the sum of its proper divisors (202774218054).

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

201323043066 is a wasteful number, since it uses less digits than its factorization.

201323043066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22110.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 201323043066 its reverse (660340323102), we get a palindrome (861663366168).

The spelling of 201323043066 in words is "two hundred one billion, three hundred twenty-three million, forty-three thousand, sixty-six".