20795396660081 has 2 divisors, whose sum is σ = 20795396660082. Its totient is φ = 20795396660080.

The previous prime is 20795396659997. The next prime is 20795396660113. The reversal of 20795396660081 is 18006669359702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20126573650225 + 668823009856 = 4486265^2 + 817816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20795396660081 is a prime.

It is a super-2 number, since 2×20795396660081² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20795396659996 and 20795396660023.

It is not a weakly prime, because it can be changed into another prime (20795396660281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10397698330040 + 10397698330041.

It is an arithmetic number, because the mean of its divisors is an integer number (10397698330041).

Almost surely, 2^{20795396660081} is an apocalyptic number.

It is an amenable number.

20795396660081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20795396660081 is an equidigital number, since it uses as much as digits as its factorization.

20795396660081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 20795396660081 in words is "twenty trillion, seven hundred ninety-five billion, three hundred ninety-six million, six hundred sixty thousand, eighty-one".