20346116533 has 2 divisors, whose sum is σ = 20346116534. Its totient is φ = 20346116532.

The previous prime is 20346116513. The next prime is 20346116537. The reversal of 20346116533 is 33561164302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17697779089 + 2648337444 = 133033^2 + 51462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20346116533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346116537) 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, 10173058266 + 10173058267.

It is an arithmetic number, because the mean of its divisors is an integer number (10173058267).

Almost surely, 2^20346116533 is an apocalyptic number.

It is an amenable number.

20346116533 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346116533 is an equidigital number, since it uses as much as digits as its factorization.

20346116533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 20346116533 in words is "twenty billion, three hundred forty-six million, one hundred sixteen thousand, five hundred thirty-three".