201828218844885 has 16 divisors (see below), whose sum is σ = 327012810282240. Its totient is φ = 106279163340480.

The previous prime is 201828218844883. The next prime is 201828218844919. The reversal of 201828218844885 is 588448812828102.

It is not a de Polignac number, because 201828218844885 - 2¹ = 201828218844883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201828218844883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85159584826 + ... + 85159587195.

It is an arithmetic number, because the mean of its divisors is an integer number (20438300642640).

Almost surely, 2^{201828218844885} is an apocalyptic number.

It is an amenable number.

201828218844885 is a deficient number, since it is larger than the sum of its proper divisors (125184591437355).

201828218844885 is a wasteful number, since it uses less digits than its factorization.

201828218844885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170319172108.

The product of its (nonzero) digits is 167772160, while the sum is 69.

The spelling of 201828218844885 in words is "two hundred one trillion, eight hundred twenty-eight billion, two hundred eighteen million, eight hundred forty-four thousand, eight hundred eighty-five".