840634115311 has 2 divisors, whose sum is σ = 840634115312. Its totient is φ = 840634115310.

The previous prime is 840634115291. The next prime is 840634115369. The reversal of 840634115311 is 113511436048.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840634115311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840634115611) 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, 420317057655 + 420317057656.

It is an arithmetic number, because the mean of its divisors is an integer number (420317057656).

Almost surely, 2^840634115311 is an apocalyptic number.

840634115311 is a deficient number, since it is larger than the sum of its proper divisors (1).

840634115311 is an equidigital number, since it uses as much as digits as its factorization.

840634115311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 840634115311 in words is "eight hundred forty billion, six hundred thirty-four million, one hundred fifteen thousand, three hundred eleven".