17959437879601 has 2 divisors, whose sum is σ = 17959437879602. Its totient is φ = 17959437879600.

The previous prime is 17959437879541. The next prime is 17959437879637. The reversal of 17959437879601 is 10697873495971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12734556239601 + 5224881640000 = 3568551^2 + 2285800^2 .

It is a cyclic number.

It is not a de Polignac number, because 17959437879601 - 2⁷ = 17959437879473 is a prime.

It is not a weakly prime, because it can be changed into another prime (17959437879641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8979718939800 + 8979718939801.

It is an arithmetic number, because the mean of its divisors is an integer number (8979718939801).

Almost surely, 2^{17959437879601} is an apocalyptic number.

It is an amenable number.

17959437879601 is a deficient number, since it is larger than the sum of its proper divisors (1).

17959437879601 is an equidigital number, since it uses as much as digits as its factorization.

17959437879601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720135360, while the sum is 76.

The spelling of 17959437879601 in words is "seventeen trillion, nine hundred fifty-nine billion, four hundred thirty-seven million, eight hundred seventy-nine thousand, six hundred one".