20350020436261 has 2 divisors, whose sum is σ = 20350020436262. Its totient is φ = 20350020436260.

The previous prime is 20350020436201. The next prime is 20350020436297. The reversal of 20350020436261 is 16263402005302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10974213180225 + 9375807256036 = 3312735^2 + 3061994^2 .

It is a cyclic number.

It is not a de Polignac number, because 20350020436261 - 2⁷ = 20350020436133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20350020436201) 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, 10175010218130 + 10175010218131.

It is an arithmetic number, because the mean of its divisors is an integer number (10175010218131).

Almost surely, 2^{20350020436261} is an apocalyptic number.

It is an amenable number.

20350020436261 is a deficient number, since it is larger than the sum of its proper divisors (1).

20350020436261 is an equidigital number, since it uses as much as digits as its factorization.

20350020436261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 20350020436261 in words is "twenty trillion, three hundred fifty billion, twenty million, four hundred thirty-six thousand, two hundred sixty-one".