20316165644303 has 2 divisors, whose sum is σ = 20316165644304. Its totient is φ = 20316165644302.

The previous prime is 20316165644221. The next prime is 20316165644309. The reversal of 20316165644303 is 30344656161302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20316165644303 is a prime.

It is a super-2 number, since 2×20316165644303² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20316165644309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10158082822151 + 10158082822152.

It is an arithmetic number, because the mean of its divisors is an integer number (10158082822152).

Almost surely, 2^{20316165644303} is an apocalyptic number.

20316165644303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20316165644303 is an equidigital number, since it uses as much as digits as its factorization.

20316165644303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 20316165644303 in words is "twenty trillion, three hundred sixteen billion, one hundred sixty-five million, six hundred forty-four thousand, three hundred three".