20356416263 has 2 divisors, whose sum is σ = 20356416264. Its totient is φ = 20356416262.

The previous prime is 20356416253. The next prime is 20356416277. The reversal of 20356416263 is 36261465302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20356416263 - 2⁸ = 20356416007 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20356416203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10178208131 + 10178208132.

It is an arithmetic number, because the mean of its divisors is an integer number (10178208132).

Almost surely, 2^20356416263 is an apocalyptic number.

20356416263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20356416263 is an equidigital number, since it uses as much as digits as its factorization.

20356416263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 20356416263 in words is "twenty billion, three hundred fifty-six million, four hundred sixteen thousand, two hundred sixty-three".