21236072035063 has 2 divisors, whose sum is σ = 21236072035064. Its totient is φ = 21236072035062.

The previous prime is 21236072035051. The next prime is 21236072035097. The reversal of 21236072035063 is 36053027063212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21236072035063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21236072035033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10618036017531 + 10618036017532.

It is an arithmetic number, because the mean of its divisors is an integer number (10618036017532).

Almost surely, 2^{21236072035063} is an apocalyptic number.

21236072035063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21236072035063 is an equidigital number, since it uses as much as digits as its factorization.

21236072035063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 40.

Adding to 21236072035063 its reverse (36053027063212), we get a palindrome (57289099098275).

The spelling of 21236072035063 in words is "twenty-one trillion, two hundred thirty-six billion, seventy-two million, thirty-five thousand, sixty-three".