840084066737 has 2 divisors, whose sum is σ = 840084066738. Its totient is φ = 840084066736.

The previous prime is 840084066683. The next prime is 840084066743. The reversal of 840084066737 is 737660480048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 840084066721 + 16 = 916561^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 840084066737 - 2⁶ = 840084066673 is a prime.

It is not a weakly prime, because it can be changed into another prime (840084066137) 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, 420042033368 + 420042033369.

It is an arithmetic number, because the mean of its divisors is an integer number (420042033369).

Almost surely, 2^840084066737 is an apocalyptic number.

It is an amenable number.

840084066737 is a deficient number, since it is larger than the sum of its proper divisors (1).

840084066737 is an equidigital number, since it uses as much as digits as its factorization.

840084066737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 840084066737 in words is "eight hundred forty billion, eighty-four million, sixty-six thousand, seven hundred thirty-seven".