21313502654363 has 2 divisors, whose sum is σ = 21313502654364. Its totient is φ = 21313502654362.

The previous prime is 21313502654357. The next prime is 21313502654413. The reversal of 21313502654363 is 36345620531312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21313502654363 - 2¹⁴ = 21313502637979 is a prime.

It is not a weakly prime, because it can be changed into another prime (21313502654303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656751327181 + 10656751327182.

It is an arithmetic number, because the mean of its divisors is an integer number (10656751327182).

Almost surely, 2^{21313502654363} is an apocalyptic number.

21313502654363 is a deficient number, since it is larger than the sum of its proper divisors (1).

21313502654363 is an equidigital number, since it uses as much as digits as its factorization.

21313502654363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 21313502654363 in words is "twenty-one trillion, three hundred thirteen billion, five hundred two million, six hundred fifty-four thousand, three hundred sixty-three".