21320082635063 has 2 divisors, whose sum is σ = 21320082635064. Its totient is φ = 21320082635062.

The previous prime is 21320082634969. The next prime is 21320082635083. The reversal of 21320082635063 is 36053628002312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21320082635063 - 2¹² = 21320082630967 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21320082635063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21320082635083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10660041317531 + 10660041317532.

It is an arithmetic number, because the mean of its divisors is an integer number (10660041317532).

Almost surely, 2^{21320082635063} is an apocalyptic number.

21320082635063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21320082635063 is an equidigital number, since it uses as much as digits as its factorization.

21320082635063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 21320082635063 in words is "twenty-one trillion, three hundred twenty billion, eighty-two million, six hundred thirty-five thousand, sixty-three".