20117113800677 has 2 divisors, whose sum is σ = 20117113800678. Its totient is φ = 20117113800676.

The previous prime is 20117113800659. The next prime is 20117113800683. The reversal of 20117113800677 is 77600831171102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14605742488516 + 5511371312161 = 3821746^2 + 2347631^2 .

It is a cyclic number.

It is not a de Polignac number, because 20117113800677 - 2²⁶ = 20117046691813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20117113800607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058556900338 + 10058556900339.

It is an arithmetic number, because the mean of its divisors is an integer number (10058556900339).

Almost surely, 2^{20117113800677} is an apocalyptic number.

It is an amenable number.

20117113800677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20117113800677 is an equidigital number, since it uses as much as digits as its factorization.

20117113800677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 44.

Adding to 20117113800677 its reverse (77600831171102), we get a palindrome (97717944971779).

The spelling of 20117113800677 in words is "twenty trillion, one hundred seventeen billion, one hundred thirteen million, eight hundred thousand, six hundred seventy-seven".