199885063864 has 16 divisors (see below), whose sum is σ = 378423180720. Its totient is φ = 98972215680.

The previous prime is 199885063841. The next prime is 199885063867. The reversal of 199885063864 is 468360588991.

It is a super-2 number, since 2×199885063864² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 199885063864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199885063867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121288657 + ... + 121290304.

It is an arithmetic number, because the mean of its divisors is an integer number (23651448795).

Almost surely, 2^199885063864 is an apocalyptic number.

It is an amenable number.

199885063864 is a deficient number, since it is larger than the sum of its proper divisors (178538116856).

199885063864 is a wasteful number, since it uses less digits than its factorization.

199885063864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242579070 (or 242579066 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 67.

The spelling of 199885063864 in words is "one hundred ninety-nine billion, eight hundred eighty-five million, sixty-three thousand, eight hundred sixty-four".