16645135191 has 32 divisors (see below), whose sum is σ = 23151268800. Its totient is φ = 10624696320.

The previous prime is 16645135141. The next prime is 16645135201. The reversal of 16645135191 is 19153154661.

It is not a de Polignac number, because 16645135191 - 2⁹ = 16645134679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16645135141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5386975 + ... + 5390063.

It is an arithmetic number, because the mean of its divisors is an integer number (723477150).

Almost surely, 2^16645135191 is an apocalyptic number.

16645135191 is a deficient number, since it is larger than the sum of its proper divisors (6506133609).

16645135191 is a wasteful number, since it uses less digits than its factorization.

16645135191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619.

The product of its digits is 97200, while the sum is 42.

The spelling of 16645135191 in words is "sixteen billion, six hundred forty-five million, one hundred thirty-five thousand, one hundred ninety-one".