201285165887 has 8 divisors (see below), whose sum is σ = 217221191040. Its totient is φ = 185413790880.

The previous prime is 201285165883. The next prime is 201285165889. The reversal of 201285165887 is 788561582102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201285165887 - 2² = 201285165883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201285165883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16156064 + ... + 16168517.

It is an arithmetic number, because the mean of its divisors is an integer number (27152648880).

Almost surely, 2^201285165887 is an apocalyptic number.

201285165887 is a deficient number, since it is larger than the sum of its proper divisors (15936025153).

201285165887 is a wasteful number, since it uses less digits than its factorization.

201285165887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32325073.

The product of its (nonzero) digits is 2150400, while the sum is 53.

The spelling of 201285165887 in words is "two hundred one billion, two hundred eighty-five million, one hundred sixty-five thousand, eight hundred eighty-seven".