191171614442 has 16 divisors (see below), whose sum is σ = 304961778240. Its totient is φ = 89621417088.

The previous prime is 191171614433. The next prime is 191171614477. The reversal of 191171614442 is 244416171191.

It is a self number, because there is not a number n which added to its sum of digits gives 191171614442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25928438 + ... + 25935809.

It is an arithmetic number, because the mean of its divisors is an integer number (19060111140).

Almost surely, 2^191171614442 is an apocalyptic number.

191171614442 is a deficient number, since it is larger than the sum of its proper divisors (113790163798).

191171614442 is a wasteful number, since it uses less digits than its factorization.

191171614442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51864365.

The product of its digits is 48384, while the sum is 41.

The spelling of 191171614442 in words is "one hundred ninety-one billion, one hundred seventy-one million, six hundred fourteen thousand, four hundred forty-two".