20633915063 has 2 divisors, whose sum is σ = 20633915064. Its totient is φ = 20633915062.

The previous prime is 20633915033. The next prime is 20633915101. The reversal of 20633915063 is 36051933602.

It is an a-pointer prime, because the next prime (20633915101) can be obtained adding 20633915063 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20633915063 - 2¹⁰ = 20633914039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20633915033) 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, 10316957531 + 10316957532.

It is an arithmetic number, because the mean of its divisors is an integer number (10316957532).

Almost surely, 2^20633915063 is an apocalyptic number.

20633915063 is a deficient number, since it is larger than the sum of its proper divisors (1).

20633915063 is an equidigital number, since it uses as much as digits as its factorization.

20633915063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 38.

The spelling of 20633915063 in words is "twenty billion, six hundred thirty-three million, nine hundred fifteen thousand, sixty-three".