195434646568 has 64 divisors (see below), whose sum is σ = 427796328960. Its totient is φ = 81975016896.

The previous prime is 195434646493. The next prime is 195434646569. The reversal of 195434646568 is 865646434591.

It is not an unprimeable number, because it can be changed into a prime (195434646569) 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, 300855 + ... + 693817.

It is an arithmetic number, because the mean of its divisors is an integer number (6684317640).

Almost surely, 2^195434646568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195434646568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213898164480).

195434646568 is an abundant number, since it is smaller than the sum of its proper divisors (232361682392).

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

195434646568 is a wasteful number, since it uses less digits than its factorization.

195434646568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393166 (or 393162 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 61.

The spelling of 195434646568 in words is "one hundred ninety-five billion, four hundred thirty-four million, six hundred forty-six thousand, five hundred sixty-eight".