20113515542317 has 2 divisors, whose sum is σ = 20113515542318. Its totient is φ = 20113515542316.

The previous prime is 20113515542297. The next prime is 20113515542347. The reversal of 20113515542317 is 71324551531102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19830731955241 + 282783587076 = 4453171^2 + 531774^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113515542317 - 2⁷ = 20113515542189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20113515542317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113515542347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056757771158 + 10056757771159.

It is an arithmetic number, because the mean of its divisors is an integer number (10056757771159).

Almost surely, 2^{20113515542317} is an apocalyptic number.

It is an amenable number.

20113515542317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113515542317 is an equidigital number, since it uses as much as digits as its factorization.

20113515542317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 20113515542317 in words is "twenty trillion, one hundred thirteen billion, five hundred fifteen million, five hundred forty-two thousand, three hundred seventeen".