201563566350 has 24 divisors (see below), whose sum is σ = 499877644920. Its totient is φ = 53750284320.

The previous prime is 201563566327. The next prime is 201563566361. The reversal of 201563566350 is 53665365102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 671878405 + ... + 671878704.

It is an arithmetic number, because the mean of its divisors is an integer number (20828235205).

Almost surely, 2^201563566350 is an apocalyptic number.

201563566350 is an abundant number, since it is smaller than the sum of its proper divisors (298314078570).

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

201563566350 is a wasteful number, since it uses less digits than its factorization.

201563566350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343757124 (or 1343757119 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 42.

The spelling of 201563566350 in words is "two hundred one billion, five hundred sixty-three million, five hundred sixty-six thousand, three hundred fifty".