21011068963 has 2 divisors, whose sum is σ = 21011068964. Its totient is φ = 21011068962.

The previous prime is 21011068921. The next prime is 21011068993. The reversal of 21011068963 is 36986011012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21011068963 is a prime.

It is not a weakly prime, because it can be changed into another prime (21011068993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505534481 + 10505534482.

It is an arithmetic number, because the mean of its divisors is an integer number (10505534482).

Almost surely, 2^21011068963 is an apocalyptic number.

21011068963 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011068963 is an equidigital number, since it uses as much as digits as its factorization.

21011068963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

Adding to 21011068963 its reverse (36986011012), we get a palindrome (57997079975).

The spelling of 21011068963 in words is "twenty-one billion, eleven million, sixty-eight thousand, nine hundred sixty-three".