20350563361 has 2 divisors, whose sum is σ = 20350563362. Its totient is φ = 20350563360.

The previous prime is 20350563341. The next prime is 20350563379. The reversal of 20350563361 is 16336505302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19506312225 + 844251136 = 139665^2 + 29056^2 .

It is a cyclic number.

It is not a de Polignac number, because 20350563361 - 2¹⁵ = 20350530593 is a prime.

It is a super-2 number, since 2×20350563361² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20350563341) 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, 10175281680 + 10175281681.

It is an arithmetic number, because the mean of its divisors is an integer number (10175281681).

Almost surely, 2^20350563361 is an apocalyptic number.

It is an amenable number.

20350563361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20350563361 is an equidigital number, since it uses as much as digits as its factorization.

20350563361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 34.

The spelling of 20350563361 in words is "twenty billion, three hundred fifty million, five hundred sixty-three thousand, three hundred sixty-one".