17823935308849 has 2 divisors, whose sum is σ = 17823935308850. Its totient is φ = 17823935308848.

The previous prime is 17823935308787. The next prime is 17823935308913. The reversal of 17823935308849 is 94880353932871.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14046432092449 + 3777503216400 = 3747857^2 + 1943580^2 .

It is a cyclic number.

It is not a de Polignac number, because 17823935308849 - 2¹³ = 17823935300657 is a prime.

It is not a weakly prime, because it can be changed into another prime (17823935308549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8911967654424 + 8911967654425.

It is an arithmetic number, because the mean of its divisors is an integer number (8911967654425).

Almost surely, 2^{17823935308849} is an apocalyptic number.

It is an amenable number.

17823935308849 is a deficient number, since it is larger than the sum of its proper divisors (1).

17823935308849 is an equidigital number, since it uses as much as digits as its factorization.

17823935308849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 313528320, while the sum is 70.

The spelling of 17823935308849 in words is "seventeen trillion, eight hundred twenty-three billion, nine hundred thirty-five million, three hundred eight thousand, eight hundred forty-nine".