16513389653 has 2 divisors, whose sum is σ = 16513389654. Its totient is φ = 16513389652.

The previous prime is 16513389623. The next prime is 16513389677. The reversal of 16513389653 is 35698331561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12024657649 + 4488732004 = 109657^2 + 66998^2 .

It is a cyclic number.

It is not a de Polignac number, because 16513389653 - 2¹⁴ = 16513373269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16513389623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8256694826 + 8256694827.

It is an arithmetic number, because the mean of its divisors is an integer number (8256694827).

Almost surely, 2^16513389653 is an apocalyptic number.

It is an amenable number.

16513389653 is a deficient number, since it is larger than the sum of its proper divisors (1).

16513389653 is an equidigital number, since it uses as much as digits as its factorization.

16513389653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 50.

The spelling of 16513389653 in words is "sixteen billion, five hundred thirteen million, three hundred eighty-nine thousand, six hundred fifty-three".