21320032963 has 2 divisors, whose sum is σ = 21320032964. Its totient is φ = 21320032962.

The previous prime is 21320032913. The next prime is 21320033027. The reversal of 21320032963 is 36923002312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21320032963 - 2¹³ = 21320024771 is a prime.

It is not a weakly prime, because it can be changed into another prime (21320032913) 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, 10660016481 + 10660016482.

It is an arithmetic number, because the mean of its divisors is an integer number (10660016482).

Almost surely, 2^21320032963 is an apocalyptic number.

21320032963 is a deficient number, since it is larger than the sum of its proper divisors (1).

21320032963 is an equidigital number, since it uses as much as digits as its factorization.

21320032963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 21320032963 in words is "twenty-one billion, three hundred twenty million, thirty-two thousand, nine hundred sixty-three".