21459009083 has 2 divisors, whose sum is σ = 21459009084. Its totient is φ = 21459009082.

The previous prime is 21459009079. The next prime is 21459009097. The reversal of 21459009083 is 38090095412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21459009083 - 2² = 21459009079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21459009083.

It is not a weakly prime, because it can be changed into another prime (21459009053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10729504541 + 10729504542.

It is an arithmetic number, because the mean of its divisors is an integer number (10729504542).

Almost surely, 2^21459009083 is an apocalyptic number.

21459009083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21459009083 is an equidigital number, since it uses as much as digits as its factorization.

21459009083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 21459009083 in words is "twenty-one billion, four hundred fifty-nine million, nine thousand, eighty-three".