201100566500 has 48 divisors (see below), whose sum is σ = 439266312576. Its totient is φ = 80428748000.

The previous prime is 201100566467. The next prime is 201100566521. The reversal of 201100566500 is 5665001102.

It is a self number, because there is not a number n which added to its sum of digits gives 201100566500.

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, 4060889 + ... + 4110111.

It is an arithmetic number, because the mean of its divisors is an integer number (9151381512).

Almost surely, 2^201100566500 is an apocalyptic number.

201100566500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201100566500 is an abundant number, since it is smaller than the sum of its proper divisors (238165746076).

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

201100566500 is a wasteful number, since it uses less digits than its factorization.

201100566500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57413 (or 57401 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 201100566500 its reverse (5665001102), we get a palindrome (206765567602).

The spelling of 201100566500 in words is "two hundred one billion, one hundred million, five hundred sixty-six thousand, five hundred".