17959823959829 has 2 divisors, whose sum is σ = 17959823959830. Its totient is φ = 17959823959828.

The previous prime is 17959823959807. The next prime is 17959823959843. The reversal of 17959823959829 is 92895932895971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10331898062929 + 7627925896900 = 3214327^2 + 2761870^2 .

It is a cyclic number.

It is not a de Polignac number, because 17959823959829 - 2²⁸ = 17959555524373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17959823959879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8979911979914 + 8979911979915.

It is an arithmetic number, because the mean of its divisors is an integer number (8979911979915).

Almost surely, 2^{17959823959829} is an apocalyptic number.

It is an amenable number.

17959823959829 is a deficient number, since it is larger than the sum of its proper divisors (1).

17959823959829 is an equidigital number, since it uses as much as digits as its factorization.

17959823959829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7936185600, while the sum is 86.

The spelling of 17959823959829 in words is "seventeen trillion, nine hundred fifty-nine billion, eight hundred twenty-three million, nine hundred fifty-nine thousand, eight hundred twenty-nine".