161388667259 has 2 divisors, whose sum is σ = 161388667260. Its totient is φ = 161388667258.

The previous prime is 161388667247. The next prime is 161388667309. The reversal of 161388667259 is 952766883161.

161388667259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161388667259 is a prime.

It is not a weakly prime, because it can be changed into another prime (161388660259) 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, 80694333629 + 80694333630.

It is an arithmetic number, because the mean of its divisors is an integer number (80694333630).

Almost surely, 2^161388667259 is an apocalyptic number.

161388667259 is a deficient number, since it is larger than the sum of its proper divisors (1).

161388667259 is an equidigital number, since it uses as much as digits as its factorization.

161388667259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 62.

The spelling of 161388667259 in words is "one hundred sixty-one billion, three hundred eighty-eight million, six hundred sixty-seven thousand, two hundred fifty-nine".