195660116747866 has 32 divisors (see below), whose sum is σ = 308854404481536. Its totient is φ = 92840876568000.

The previous prime is 195660116747863. The next prime is 195660116747867. The reversal of 195660116747866 is 668747611066591.

It is not an unprimeable number, because it can be changed into a prime (195660116747863) 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, 76897045 + ... + 79400728.

It is an arithmetic number, because the mean of its divisors is an integer number (9651700140048).

Almost surely, 2^{195660116747866} is an apocalyptic number.

195660116747866 is a deficient number, since it is larger than the sum of its proper divisors (113194287733670).

195660116747866 is a wasteful number, since it uses less digits than its factorization.

195660116747866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156298198.

The product of its (nonzero) digits is 548674560, while the sum is 73.

The spelling of 195660116747866 in words is "one hundred ninety-five trillion, six hundred sixty billion, one hundred sixteen million, seven hundred forty-seven thousand, eight hundred sixty-six".