20117700124793 has 2 divisors, whose sum is σ = 20117700124794. Its totient is φ = 20117700124792.

The previous prime is 20117700124763. The next prime is 20117700124831. The reversal of 20117700124793 is 39742100771102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10200409540864 + 9917290583929 = 3193808^2 + 3149173^2 .

It is a cyclic number.

It is not a de Polignac number, because 20117700124793 - 2¹⁰ = 20117700123769 is a prime.

It is a super-2 number, since 2×20117700124793² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20117700124733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058850062396 + 10058850062397.

It is an arithmetic number, because the mean of its divisors is an integer number (10058850062397).

Almost surely, 2^{20117700124793} is an apocalyptic number.

It is an amenable number.

20117700124793 is a deficient number, since it is larger than the sum of its proper divisors (1).

20117700124793 is an equidigital number, since it uses as much as digits as its factorization.

20117700124793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 44.

Adding to 20117700124793 its reverse (39742100771102), we get a palindrome (59859800895895).

The spelling of 20117700124793 in words is "twenty trillion, one hundred seventeen billion, seven hundred million, one hundred twenty-four thousand, seven hundred ninety-three".