20414558587117 has 2 divisors, whose sum is σ = 20414558587118. Its totient is φ = 20414558587116.

The previous prime is 20414558587063. The next prime is 20414558587127. The reversal of 20414558587117 is 71178585541402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19805606221801 + 608952365316 = 4450349^2 + 780354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20414558587117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20414558587127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10207279293558 + 10207279293559.

It is an arithmetic number, because the mean of its divisors is an integer number (10207279293559).

Almost surely, 2^{20414558587117} is an apocalyptic number.

It is an amenable number.

20414558587117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20414558587117 is an equidigital number, since it uses as much as digits as its factorization.

20414558587117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544000, while the sum is 58.

The spelling of 20414558587117 in words is "twenty trillion, four hundred fourteen billion, five hundred fifty-eight million, five hundred eighty-seven thousand, one hundred seventeen".