201364633566 has 96 divisors (see below), whose sum is σ = 463844646720. Its totient is φ = 63020966400.

The previous prime is 201364633549. The next prime is 201364633601. The reversal of 201364633566 is 665336463102.

201364633566 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 6 + 4 + 633 + 5 + 6 + 6 = 666.

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 47 ways as a sum of consecutive naturals, for example, 6640896 + ... + 6671148.

It is an arithmetic number, because the mean of its divisors is an integer number (4831715070).

Almost surely, 2^201364633566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201364633566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231922323360).

201364633566 is an abundant number, since it is smaller than the sum of its proper divisors (262480013154).

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

201364633566 is a wasteful number, since it uses less digits than its factorization.

201364633566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30642 (or 30639 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 45.

The spelling of 201364633566 in words is "two hundred one billion, three hundred sixty-four million, six hundred thirty-three thousand, five hundred sixty-six".