191996466170 has 8 divisors (see below), whose sum is σ = 345593639124. Its totient is φ = 76798586464.

The previous prime is 191996466169. The next prime is 191996466203. The reversal of 191996466170 is 71664699191.

It can be written as a sum of positive squares in 2 ways, for example, as 176148929401 + 15847536769 = 419701^2 + 125887^2 .

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

It is a Curzon 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, 9599823299 + ... + 9599823318.

Almost surely, 2^191996466170 is an apocalyptic number.

191996466170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191996466170 is a deficient number, since it is larger than the sum of its proper divisors (153597172954).

191996466170 is a wasteful number, since it uses less digits than its factorization.

191996466170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19199646624.

The product of its (nonzero) digits is 4408992, while the sum is 59.

The spelling of 191996466170 in words is "one hundred ninety-one billion, nine hundred ninety-six million, four hundred sixty-six thousand, one hundred seventy".