6501020459 has 2 divisors, whose sum is σ = 6501020460. Its totient is φ = 6501020458.

The previous prime is 6501020431. The next prime is 6501020479. The reversal of 6501020459 is 9540201056.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6501020459 is a prime.

It is not a weakly prime, because it can be changed into another prime (6501020429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250510229 + 3250510230.

It is an arithmetic number, because the mean of its divisors is an integer number (3250510230).

Almost surely, 2^6501020459 is an apocalyptic number.

6501020459 is a deficient number, since it is larger than the sum of its proper divisors (1).

6501020459 is an equidigital number, since it uses as much as digits as its factorization.

6501020459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 6501020459 is about 80628.9058526779. The cubic root of 6501020459 is about 1866.3532367496.

The spelling of 6501020459 in words is "six billion, five hundred one million, twenty thousand, four hundred fifty-nine".