21248845528063 has 2 divisors, whose sum is σ = 21248845528064. Its totient is φ = 21248845528062.

The previous prime is 21248845528051. The next prime is 21248845528087. The reversal of 21248845528063 is 36082554884212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21248845528063 - 2³⁷ = 21111406574591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21248845527989 and 21248845528007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21248845528003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10624422764031 + 10624422764032.

It is an arithmetic number, because the mean of its divisors is an integer number (10624422764032).

Almost surely, 2^{21248845528063} is an apocalyptic number.

21248845528063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21248845528063 is an equidigital number, since it uses as much as digits as its factorization.

21248845528063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29491200, while the sum is 58.

The spelling of 21248845528063 in words is "twenty-one trillion, two hundred forty-eight billion, eight hundred forty-five million, five hundred twenty-eight thousand, sixty-three".