16868432803709 has 2 divisors, whose sum is σ = 16868432803710. Its totient is φ = 16868432803708.

The previous prime is 16868432803699. The next prime is 16868432803793. The reversal of 16868432803709 is 90730823486861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13952951683225 + 2915481120484 = 3735365^2 + 1707478^2 .

It is a cyclic number.

It is not a de Polignac number, because 16868432803709 - 2²⁴ = 16868416026493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16868432803799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8434216401854 + 8434216401855.

It is an arithmetic number, because the mean of its divisors is an integer number (8434216401855).

Almost surely, 2^{16868432803709} is an apocalyptic number.

It is an amenable number.

16868432803709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16868432803709 is an equidigital number, since it uses as much as digits as its factorization.

16868432803709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83607552, while the sum is 65.

The spelling of 16868432803709 in words is "sixteen trillion, eight hundred sixty-eight billion, four hundred thirty-two million, eight hundred three thousand, seven hundred nine".