16161607559 has 2 divisors, whose sum is σ = 16161607560. Its totient is φ = 16161607558.

The previous prime is 16161607493. The next prime is 16161607589. The reversal of 16161607559 is 95570616161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16161607559 - 2²⁸ = 15893172103 is a prime.

It is a super-2 number, since 2×16161607559² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16161607589) 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, 8080803779 + 8080803780.

It is an arithmetic number, because the mean of its divisors is an integer number (8080803780).

Almost surely, 2^16161607559 is an apocalyptic number.

16161607559 is a deficient number, since it is larger than the sum of its proper divisors (1).

16161607559 is an equidigital number, since it uses as much as digits as its factorization.

16161607559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 16161607559 in words is "sixteen billion, one hundred sixty-one million, six hundred seven thousand, five hundred fifty-nine".