21320082634969 has 2 divisors, whose sum is σ = 21320082634970. Its totient is φ = 21320082634968.

The previous prime is 21320082634919. The next prime is 21320082635063. The reversal of 21320082634969 is 96943628002312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19367146259344 + 1952936375625 = 4400812^2 + 1397475^2 .

It is a cyclic number.

It is not a de Polignac number, because 21320082634969 - 2⁷ = 21320082634841 is a prime.

It is a super-2 number, since 2×21320082634969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21320082634919) 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, 10660041317484 + 10660041317485.

It is an arithmetic number, because the mean of its divisors is an integer number (10660041317485).

Almost surely, 2^{21320082634969} is an apocalyptic number.

It is an amenable number.

21320082634969 is a deficient number, since it is larger than the sum of its proper divisors (1).

21320082634969 is an equidigital number, since it uses as much as digits as its factorization.

21320082634969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 21320082634969 in words is "twenty-one trillion, three hundred twenty billion, eighty-two million, six hundred thirty-four thousand, nine hundred sixty-nine".