16536673513 has 2 divisors, whose sum is σ = 16536673514. Its totient is φ = 16536673512.

The previous prime is 16536673507. The next prime is 16536673583. The reversal of 16536673513 is 31537663561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12171164329 + 4365509184 = 110323^2 + 66072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16536673513 is a prime.

It is a super-2 number, since 2×16536673513² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16536673583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8268336756 + 8268336757.

It is an arithmetic number, because the mean of its divisors is an integer number (8268336757).

Almost surely, 2^16536673513 is an apocalyptic number.

It is an amenable number.

16536673513 is a deficient number, since it is larger than the sum of its proper divisors (1).

16536673513 is an equidigital number, since it uses as much as digits as its factorization.

16536673513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 46.

The spelling of 16536673513 in words is "sixteen billion, five hundred thirty-six million, six hundred seventy-three thousand, five hundred thirteen".