201783867885966 has 32 divisors (see below), whose sum is σ = 403701526599840. Its totient is φ = 67238992041984.

The previous prime is 201783867885961. The next prime is 201783867885967. The reversal of 201783867885966 is 669588768387102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201783867885961) 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, 768531126 + ... + 768793638.

It is an arithmetic number, because the mean of its divisors is an integer number (12615672706245).

Almost surely, 2^{201783867885966} is an apocalyptic number.

201783867885966 is an abundant number, since it is smaller than the sum of its proper divisors (201917658713874).

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

201783867885966 is a wasteful number, since it uses less digits than its factorization.

201783867885966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304500.

The product of its (nonzero) digits is 11705057280, while the sum is 84.

The spelling of 201783867885966 in words is "two hundred one trillion, seven hundred eighty-three billion, eight hundred sixty-seven million, eight hundred eighty-five thousand, nine hundred sixty-six".