201016236543565 has 16 divisors (see below), whose sum is σ = 245024660644992. Its totient is φ = 158295350251584.

The previous prime is 201016236543553. The next prime is 201016236543587. The reversal of 201016236543565 is 565345632610102.

It is a cyclic number.

It is not a de Polignac number, because 201016236543565 - 2⁵ = 201016236543533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1196512449 + ... + 1196680438.

It is an arithmetic number, because the mean of its divisors is an integer number (15314041290312).

Almost surely, 2^{201016236543565} is an apocalyptic number.

It is an amenable number.

201016236543565 is a deficient number, since it is larger than the sum of its proper divisors (44008424101427).

201016236543565 is a wasteful number, since it uses less digits than its factorization.

201016236543565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393193156.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 201016236543565 in words is "two hundred one trillion, sixteen billion, two hundred thirty-six million, five hundred forty-three thousand, five hundred sixty-five".