16111106208391 has 2 divisors, whose sum is σ = 16111106208392. Its totient is φ = 16111106208390.

The previous prime is 16111106208311. The next prime is 16111106208493. The reversal of 16111106208391 is 19380260111161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16111106208391 - 2¹¹ = 16111106206343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16111106208311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8055553104195 + 8055553104196.

It is an arithmetic number, because the mean of its divisors is an integer number (8055553104196).

Almost surely, 2^{16111106208391} is an apocalyptic number.

16111106208391 is a deficient number, since it is larger than the sum of its proper divisors (1).

16111106208391 is an equidigital number, since it uses as much as digits as its factorization.

16111106208391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 40.

The spelling of 16111106208391 in words is "sixteen trillion, one hundred eleven billion, one hundred six million, two hundred eight thousand, three hundred ninety-one".