201688337050 has 24 divisors (see below), whose sum is σ = 375285222396. Its totient is φ = 80644170240.

The previous prime is 201688336987. The next prime is 201688337051. The reversal of 201688337050 is 50733886102.

It can be written as a sum of positive squares in 6 ways, for example, as 61977596209 + 139710740841 = 248953^2 + 373779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201688336988 and 201688337006.

It is not an unprimeable number, because it can be changed into a prime (201688337051) by changing a digit.

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, 648169 + ... + 907468.

Almost surely, 2^201688337050 is an apocalyptic number.

201688337050 is a deficient number, since it is larger than the sum of its proper divisors (173596885346).

201688337050 is a wasteful number, since it uses less digits than its factorization.

201688337050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558242 (or 1558237 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 201688337050 in words is "two hundred one billion, six hundred eighty-eight million, three hundred thirty-seven thousand, fifty".