195792021068 has 72 divisors (see below), whose sum is σ = 412508895120. Its totient is φ = 81019975680.

The previous prime is 195792021059. The next prime is 195792021071. The reversal of 195792021068 is 860120297591.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 653903 + ... + 905081.

It is an arithmetic number, because the mean of its divisors is an integer number (5729290210).

Almost surely, 2^195792021068 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 195792021068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206254447560).

195792021068 is an abundant number, since it is smaller than the sum of its proper divisors (216716874052).

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

195792021068 is a wasteful number, since it uses less digits than its factorization.

195792021068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251335 (or 251326 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 195792021068 in words is "one hundred ninety-five billion, seven hundred ninety-two million, twenty-one thousand, sixty-eight".