459949765621 has 2 divisors, whose sum is σ = 459949765622. Its totient is φ = 459949765620.

The previous prime is 459949765579. The next prime is 459949765637. The reversal of 459949765621 is 126567949954.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425676648721 + 34273116900 = 652439^2 + 185130^2 .

It is a cyclic number.

It is not a de Polignac number, because 459949765621 - 2⁹ = 459949765109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (459949765651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229974882810 + 229974882811.

It is an arithmetic number, because the mean of its divisors is an integer number (229974882811).

Almost surely, 2^459949765621 is an apocalyptic number.

It is an amenable number.

459949765621 is a deficient number, since it is larger than the sum of its proper divisors (1).

459949765621 is an equidigital number, since it uses as much as digits as its factorization.

459949765621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 146966400, while the sum is 67.

The spelling of 459949765621 in words is "four hundred fifty-nine billion, nine hundred forty-nine million, seven hundred sixty-five thousand, six hundred twenty-one".