16055509517 has 2 divisors, whose sum is σ = 16055509518. Its totient is φ = 16055509516.

The previous prime is 16055509507. The next prime is 16055509601. The reversal of 16055509517 is 71590555061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8408706601 + 7646802916 = 91699^2 + 87446^2 .

It is an emirp because it is prime and its reverse (71590555061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16055509517 - 2³² = 11760542221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16055509507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8027754758 + 8027754759.

It is an arithmetic number, because the mean of its divisors is an integer number (8027754759).

Almost surely, 2^16055509517 is an apocalyptic number.

It is an amenable number.

16055509517 is a deficient number, since it is larger than the sum of its proper divisors (1).

16055509517 is an equidigital number, since it uses as much as digits as its factorization.

16055509517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236250, while the sum is 44.

The spelling of 16055509517 in words is "sixteen billion, fifty-five million, five hundred nine thousand, five hundred seventeen".