201985203284 has 12 divisors (see below), whose sum is σ = 353671921344. Its totient is φ = 100936082904.

The previous prime is 201985203271. The next prime is 201985203317. The reversal of 201985203284 is 482302589102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14121644 + ... + 14135939.

It is an arithmetic number, because the mean of its divisors is an integer number (29472660112).

Almost surely, 2^201985203284 is an apocalyptic number.

It is an amenable number.

201985203284 is a deficient number, since it is larger than the sum of its proper divisors (151686718060).

201985203284 is a wasteful number, since it uses less digits than its factorization.

201985203284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28259374 (or 28259372 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 201985203284 in words is "two hundred one billion, nine hundred eighty-five million, two hundred three thousand, two hundred eighty-four".