20795924893 has 2 divisors, whose sum is σ = 20795924894. Its totient is φ = 20795924892.

The previous prime is 20795924869. The next prime is 20795924909. The reversal of 20795924893 is 39842959702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12945433284 + 7850491609 = 113778^2 + 88603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20795924893 is a prime.

It is a super-2 number, since 2×20795924893² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20795924833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10397962446 + 10397962447.

It is an arithmetic number, because the mean of its divisors is an integer number (10397962447).

Almost surely, 2^20795924893 is an apocalyptic number.

It is an amenable number.

20795924893 is a deficient number, since it is larger than the sum of its proper divisors (1).

20795924893 is an equidigital number, since it uses as much as digits as its factorization.

20795924893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 20795924893 in words is "twenty billion, seven hundred ninety-five million, nine hundred twenty-four thousand, eight hundred ninety-three".