20796198061 has 2 divisors, whose sum is σ = 20796198062. Its totient is φ = 20796198060.

The previous prime is 20796198011. The next prime is 20796198097. The reversal of 20796198061 is 16089169702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20626417161 + 169780900 = 143619^2 + 13030^2 .

It is a cyclic number.

It is not a de Polignac number, because 20796198061 - 2²¹ = 20794100909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20796197996 and 20796198014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20796198011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10398099030 + 10398099031.

It is an arithmetic number, because the mean of its divisors is an integer number (10398099031).

Almost surely, 2^20796198061 is an apocalyptic number.

It is an amenable number.

20796198061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20796198061 is an equidigital number, since it uses as much as digits as its factorization.

20796198061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 20796198061 in words is "twenty billion, seven hundred ninety-six million, one hundred ninety-eight thousand, sixty-one".