840268516111 has 2 divisors, whose sum is σ = 840268516112. Its totient is φ = 840268516110.

The previous prime is 840268516103. The next prime is 840268516123. The reversal of 840268516111 is 111615862048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 840268516111 - 2³ = 840268516103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840268516211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420134258055 + 420134258056.

It is an arithmetic number, because the mean of its divisors is an integer number (420134258056).

Almost surely, 2^840268516111 is an apocalyptic number.

840268516111 is a deficient number, since it is larger than the sum of its proper divisors (1).

840268516111 is an equidigital number, since it uses as much as digits as its factorization.

840268516111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 840268516111 in words is "eight hundred forty billion, two hundred sixty-eight million, five hundred sixteen thousand, one hundred eleven".