191140917775 has 12 divisors (see below), whose sum is σ = 238524390952. Its totient is φ = 151938764640.

The previous prime is 191140917763. The next prime is 191140917823. The reversal of 191140917775 is 577719041191.

It is not a de Polignac number, because 191140917775 - 2⁵ = 191140917743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24345237 + ... + 24353086.

Almost surely, 2^191140917775 is an apocalyptic number.

191140917775 is a deficient number, since it is larger than the sum of its proper divisors (47383473177).

191140917775 is a wasteful number, since it uses less digits than its factorization.

191140917775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48698490 (or 48698485 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 52.

The spelling of 191140917775 in words is "one hundred ninety-one billion, one hundred forty million, nine hundred seventeen thousand, seven hundred seventy-five".