20317046585519 has 2 divisors, whose sum is σ = 20317046585520. Its totient is φ = 20317046585518.

The previous prime is 20317046585491. The next prime is 20317046585611. The reversal of 20317046585519 is 91558564071302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20317046585519 - 2⁸ = 20317046585263 is a prime.

It is a super-2 number, since 2×20317046585519² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20317046585819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10158523292759 + 10158523292760.

It is an arithmetic number, because the mean of its divisors is an integer number (10158523292760).

It is a 1-persistent number, because it is pandigital, but 2⋅20317046585519 = 40634093171038 is not.

Almost surely, 2^{20317046585519} is an apocalyptic number.

20317046585519 is a deficient number, since it is larger than the sum of its proper divisors (1).

20317046585519 is an equidigital number, since it uses as much as digits as its factorization.

20317046585519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 20317046585519 in words is "twenty trillion, three hundred seventeen billion, forty-six million, five hundred eighty-five thousand, five hundred nineteen".