158109719066 has 16 divisors (see below), whose sum is σ = 255414988584. Its totient is φ = 72971721984.

The previous prime is 158109719023. The next prime is 158109719069. The reversal of 158109719066 is 660917901851.

It can be written as a sum of positive squares in 4 ways, for example, as 121560309025 + 36549410041 = 348655^2 + 191179^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 158109718999 and 158109719017.

It is not an unprimeable number, because it can be changed into a prime (158109719069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1357886 + ... + 1469718.

Almost surely, 2^158109719066 is an apocalyptic number.

158109719066 is a deficient number, since it is larger than the sum of its proper divisors (97305269518).

158109719066 is a wasteful number, since it uses less digits than its factorization.

158109719066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166225.

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 158109719066 in words is "one hundred fifty-eight billion, one hundred nine million, seven hundred nineteen thousand, sixty-six".