21703645283 has 2 divisors, whose sum is σ = 21703645284. Its totient is φ = 21703645282.

The previous prime is 21703645267. The next prime is 21703645331. The reversal of 21703645283 is 38254630712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21703645283 - 2⁴ = 21703645267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21703645283.

It is not a weakly prime, because it can be changed into another prime (21703645213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10851822641 + 10851822642.

It is an arithmetic number, because the mean of its divisors is an integer number (10851822642).

Almost surely, 2^21703645283 is an apocalyptic number.

21703645283 is a deficient number, since it is larger than the sum of its proper divisors (1).

21703645283 is an equidigital number, since it uses as much as digits as its factorization.

21703645283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 21703645283 in words is "twenty-one billion, seven hundred three million, six hundred forty-five thousand, two hundred eighty-three".