17121406191 has 16 divisors (see below), whose sum is σ = 23363539584. Its totient is φ = 11146865184.

The previous prime is 17121406187. The next prime is 17121406199. The reversal of 17121406191 is 19160412171.

It is not a de Polignac number, because 17121406191 - 2² = 17121406187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17121406199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1271305 + ... + 1284701.

It is an arithmetic number, because the mean of its divisors is an integer number (1460221224).

Almost surely, 2^17121406191 is an apocalyptic number.

17121406191 is a deficient number, since it is larger than the sum of its proper divisors (6242133393).

17121406191 is a wasteful number, since it uses less digits than its factorization.

17121406191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23350.

The product of its (nonzero) digits is 3024, while the sum is 33.

The spelling of 17121406191 in words is "seventeen billion, one hundred twenty-one million, four hundred six thousand, one hundred ninety-one".