22086640021709 has 2 divisors, whose sum is σ = 22086640021710. Its totient is φ = 22086640021708.

The previous prime is 22086640021703. The next prime is 22086640021769. The reversal of 22086640021709 is 90712004668022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21347375383684 + 739264638025 = 4620322^2 + 859805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22086640021709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22086640021703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11043320010854 + 11043320010855.

It is an arithmetic number, because the mean of its divisors is an integer number (11043320010855).

Almost surely, 2^{22086640021709} is an apocalyptic number.

It is an amenable number.

22086640021709 is a deficient number, since it is larger than the sum of its proper divisors (1).

22086640021709 is an equidigital number, since it uses as much as digits as its factorization.

22086640021709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 22086640021709 in words is "twenty-two trillion, eighty-six billion, six hundred forty million, twenty-one thousand, seven hundred nine".