21063792903823 has 2 divisors, whose sum is σ = 21063792903824. Its totient is φ = 21063792903822.

The previous prime is 21063792903809. The next prime is 21063792903997. The reversal of 21063792903823 is 32830929736012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21063792903823 - 2²⁹ = 21063256032911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21063792903323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10531896451911 + 10531896451912.

It is an arithmetic number, because the mean of its divisors is an integer number (10531896451912).

Almost surely, 2^{21063792903823} is an apocalyptic number.

21063792903823 is a deficient number, since it is larger than the sum of its proper divisors (1).

21063792903823 is an equidigital number, since it uses as much as digits as its factorization.

21063792903823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 21063792903823 in words is "twenty-one trillion, sixty-three billion, seven hundred ninety-two million, nine hundred three thousand, eight hundred twenty-three".