201130516566 has 96 divisors (see below), whose sum is σ = 518190903360. Its totient is φ = 55163388672.

The previous prime is 201130516519. The next prime is 201130516579. The reversal of 201130516566 is 665615031102.

201130516566 is a `hidden beast` number, since 2 + 0 + 1 + 130 + 516 + 5 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 201130516566.

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, 473056 + ... + 791228.

It is an arithmetic number, because the mean of its divisors is an integer number (5397821910).

Almost surely, 2^201130516566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201130516566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259095451680).

201130516566 is an abundant number, since it is smaller than the sum of its proper divisors (317060386794).

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

201130516566 is a wasteful number, since it uses less digits than its factorization.

201130516566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318390 (or 318387 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 201130516566 its reverse (665615031102), we get a palindrome (866745547668).

The spelling of 201130516566 in words is "two hundred one billion, one hundred thirty million, five hundred sixteen thousand, five hundred sixty-six".