16161607589 has 2 divisors, whose sum is σ = 16161607590. Its totient is φ = 16161607588.

The previous prime is 16161607559. The next prime is 16161607601. The reversal of 16161607589 is 98570616161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8878350625 + 7283256964 = 94225^2 + 85342^2 .

It is an emirp because it is prime and its reverse (98570616161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16161607589 - 2⁸ = 16161607333 is a prime.

It is a super-2 number, since 2×16161607589² (a number of 21 digits) contains 22 as substring.

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 (16161607559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080803794 + 8080803795.

It is an arithmetic number, because the mean of its divisors is an integer number (8080803795).

Almost surely, 2^16161607589 is an apocalyptic number.

It is an amenable number.

16161607589 is a deficient number, since it is larger than the sum of its proper divisors (1).

16161607589 is an equidigital number, since it uses as much as digits as its factorization.

16161607589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 16161607589 in words is "sixteen billion, one hundred sixty-one million, six hundred seven thousand, five hundred eighty-nine".