16842087191 has 4 divisors (see below), whose sum is σ = 16965022272. Its totient is φ = 16719152112.

The previous prime is 16842087173. The next prime is 16842087253. The reversal of 16842087191 is 19178024861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16842087191 - 2¹⁴ = 16842070807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16842087791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61467335 + ... + 61467608.

It is an arithmetic number, because the mean of its divisors is an integer number (4241255568).

Almost surely, 2^16842087191 is an apocalyptic number.

16842087191 is a deficient number, since it is larger than the sum of its proper divisors (122935081).

16842087191 is a wasteful number, since it uses less digits than its factorization.

16842087191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122935080.

The product of its (nonzero) digits is 193536, while the sum is 47.

The spelling of 16842087191 in words is "sixteen billion, eight hundred forty-two million, eighty-seven thousand, one hundred ninety-one".