840634593311 has 2 divisors, whose sum is σ = 840634593312. Its totient is φ = 840634593310.

The previous prime is 840634593307. The next prime is 840634593313. The reversal of 840634593311 is 113395436048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840634593311 - 2² = 840634593307 is a prime.

Together with 840634593313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840634593313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420317296655 + 420317296656.

It is an arithmetic number, because the mean of its divisors is an integer number (420317296656).

Almost surely, 2^840634593311 is an apocalyptic number.

840634593311 is a deficient number, since it is larger than the sum of its proper divisors (1).

840634593311 is an equidigital number, since it uses as much as digits as its factorization.

840634593311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 840634593311 in words is "eight hundred forty billion, six hundred thirty-four million, five hundred ninety-three thousand, three hundred eleven".