158689105009 has 2 divisors, whose sum is σ = 158689105010. Its totient is φ = 158689105008.

The previous prime is 158689104979. The next prime is 158689105033. The reversal of 158689105009 is 900501986851.

158689105009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157462144225 + 1226960784 = 396815^2 + 35028^2 .

It is a cyclic number.

It is not a de Polignac number, because 158689105009 - 2¹¹ = 158689102961 is a prime.

It is not a weakly prime, because it can be changed into another prime (158689105109) 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, 79344552504 + 79344552505.

It is an arithmetic number, because the mean of its divisors is an integer number (79344552505).

Almost surely, 2^158689105009 is an apocalyptic number.

It is an amenable number.

158689105009 is a deficient number, since it is larger than the sum of its proper divisors (1).

158689105009 is an equidigital number, since it uses as much as digits as its factorization.

158689105009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 52.

The spelling of 158689105009 in words is "one hundred fifty-eight billion, six hundred eighty-nine million, one hundred five thousand, nine".