21064362083 has 2 divisors, whose sum is σ = 21064362084. Its totient is φ = 21064362082.

The previous prime is 21064362061. The next prime is 21064362097. The reversal of 21064362083 is 38026346012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21064362083 - 2¹⁸ = 21064099939 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21064362043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10532181041 + 10532181042.

It is an arithmetic number, because the mean of its divisors is an integer number (10532181042).

Almost surely, 2^21064362083 is an apocalyptic number.

21064362083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21064362083 is an equidigital number, since it uses as much as digits as its factorization.

21064362083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 21064362083 in words is "twenty-one billion, sixty-four million, three hundred sixty-two thousand, eighty-three".