195663213204 has 12 divisors (see below), whose sum is σ = 456547497504. Its totient is φ = 65221071064.

The previous prime is 195663213191. The next prime is 195663213217. The reversal of 195663213204 is 402312366591.

It is an interprime number because it is at equal distance from previous prime (195663213191) and next prime (195663213217).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8152633872 + ... + 8152633895.

It is an arithmetic number, because the mean of its divisors is an integer number (38045624792).

Almost surely, 2^195663213204 is an apocalyptic number.

It is an amenable number.

195663213204 is an abundant number, since it is smaller than the sum of its proper divisors (260884284300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195663213204 is a wasteful number, since it uses less digits than its factorization.

195663213204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16305267774 (or 16305267772 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

Adding to 195663213204 its reverse (402312366591), we get a palindrome (597975579795).

The spelling of 195663213204 in words is "one hundred ninety-five billion, six hundred sixty-three million, two hundred thirteen thousand, two hundred four".