16459765813 has 2 divisors, whose sum is σ = 16459765814. Its totient is φ = 16459765812.

The previous prime is 16459765811. The next prime is 16459765853. The reversal of 16459765813 is 31856795461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14922576964 + 1537188849 = 122158^2 + 39207^2 .

It is a cyclic number.

It is not a de Polignac number, because 16459765813 - 2¹ = 16459765811 is a prime.

Together with 16459765811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16459765811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8229882906 + 8229882907.

It is an arithmetic number, because the mean of its divisors is an integer number (8229882907).

Almost surely, 2^16459765813 is an apocalyptic number.

It is an amenable number.

16459765813 is a deficient number, since it is larger than the sum of its proper divisors (1).

16459765813 is an equidigital number, since it uses as much as digits as its factorization.

16459765813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The spelling of 16459765813 in words is "sixteen billion, four hundred fifty-nine million, seven hundred sixty-five thousand, eight hundred thirteen".