16517254513 has 2 divisors, whose sum is σ = 16517254514. Its totient is φ = 16517254512.

The previous prime is 16517254469. The next prime is 16517254571. The reversal of 16517254513 is 31545271561.

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., 12857972449 + 3659282064 = 113393^2 + 60492^2 .

It is an emirp because it is prime and its reverse (31545271561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16517254513 - 2³³ = 7927319921 is a prime.

It is not a weakly prime, because it can be changed into another prime (16517254613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8258627256 + 8258627257.

It is an arithmetic number, because the mean of its divisors is an integer number (8258627257).

Almost surely, 2^16517254513 is an apocalyptic number.

It is an amenable number.

16517254513 is a deficient number, since it is larger than the sum of its proper divisors (1).

16517254513 is an equidigital number, since it uses as much as digits as its factorization.

16517254513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 40.

The spelling of 16517254513 in words is "sixteen billion, five hundred seventeen million, two hundred fifty-four thousand, five hundred thirteen".