191065234213 has 32 divisors (see below), whose sum is σ = 227713291520. Its totient is φ = 156909726720.

The previous prime is 191065234193. The next prime is 191065234219. The reversal of 191065234213 is 312432560191.

It is a cyclic number.

It is not a de Polignac number, because 191065234213 - 2⁹ = 191065233701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191065234219) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4580893 + ... + 4622413.

It is an arithmetic number, because the mean of its divisors is an integer number (7116040360).

Almost surely, 2^191065234213 is an apocalyptic number.

It is an amenable number.

191065234213 is a deficient number, since it is larger than the sum of its proper divisors (36648057307).

191065234213 is a wasteful number, since it uses less digits than its factorization.

191065234213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41837.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 191065234213 in words is "one hundred ninety-one billion, sixty-five million, two hundred thirty-four thousand, two hundred thirteen".