20743617113 has 2 divisors, whose sum is σ = 20743617114. Its totient is φ = 20743617112.

The previous prime is 20743617077. The next prime is 20743617119. The reversal of 20743617113 is 31171634702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12222850249 + 8520766864 = 110557^2 + 92308^2 .

It is a cyclic number.

It is not a de Polignac number, because 20743617113 - 2²⁶ = 20676508249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20743617119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10371808556 + 10371808557.

It is an arithmetic number, because the mean of its divisors is an integer number (10371808557).

Almost surely, 2^20743617113 is an apocalyptic number.

It is an amenable number.

20743617113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20743617113 is an equidigital number, since it uses as much as digits as its factorization.

20743617113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 20743617113 in words is "twenty billion, seven hundred forty-three million, six hundred seventeen thousand, one hundred thirteen".