840138062263 has 2 divisors, whose sum is σ = 840138062264. Its totient is φ = 840138062262.

The previous prime is 840138062191. The next prime is 840138062273. The reversal of 840138062263 is 362260831048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840138062263 - 2¹³ = 840138054071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840138062273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420069031131 + 420069031132.

It is an arithmetic number, because the mean of its divisors is an integer number (420069031132).

Almost surely, 2^840138062263 is an apocalyptic number.

840138062263 is a deficient number, since it is larger than the sum of its proper divisors (1).

840138062263 is an equidigital number, since it uses as much as digits as its factorization.

840138062263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 840138062263 in words is "eight hundred forty billion, one hundred thirty-eight million, sixty-two thousand, two hundred sixty-three".