16055509601 has 2 divisors, whose sum is σ = 16055509602. Its totient is φ = 16055509600.

The previous prime is 16055509517. The next prime is 16055509607. The reversal of 16055509601 is 10690555061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8649186001 + 7406323600 = 93001^2 + 86060^2 .

It is a cyclic number.

It is not a de Polignac number, because 16055509601 - 2¹⁴ = 16055493217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16055509607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8027754800 + 8027754801.

It is an arithmetic number, because the mean of its divisors is an integer number (8027754801).

Almost surely, 2^16055509601 is an apocalyptic number.

It is an amenable number.

16055509601 is a deficient number, since it is larger than the sum of its proper divisors (1).

16055509601 is an equidigital number, since it uses as much as digits as its factorization.

16055509601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 38.

The spelling of 16055509601 in words is "sixteen billion, fifty-five million, five hundred nine thousand, six hundred one".