195717961966 has 8 divisors (see below), whose sum is σ = 294795105264. Its totient is φ = 97452926880.

The previous prime is 195717961951. The next prime is 195717961993. The reversal of 195717961966 is 669169717591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×195717961966² (a number of 23 digits) contains 22 as substring.

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, 203026450 + ... + 203027413.

It is an arithmetic number, because the mean of its divisors is an integer number (36849388158).

Almost surely, 2^195717961966 is an apocalyptic number.

195717961966 is a deficient number, since it is larger than the sum of its proper divisors (99077143298).

195717961966 is a wasteful number, since it uses less digits than its factorization.

195717961966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406054106.

The product of its digits is 38578680, while the sum is 67.

The spelling of 195717961966 in words is "one hundred ninety-five billion, seven hundred seventeen million, nine hundred sixty-one thousand, nine hundred sixty-six".