158603894117 has 2 divisors, whose sum is σ = 158603894118. Its totient is φ = 158603894116.

The previous prime is 158603894089. The next prime is 158603894123. The reversal of 158603894117 is 711498306851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155193450916 + 3410443201 = 393946^2 + 58399^2 .

It is a cyclic number.

It is not a de Polignac number, because 158603894117 - 2¹⁰ = 158603893093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158603894717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79301947058 + 79301947059.

It is an arithmetic number, because the mean of its divisors is an integer number (79301947059).

Almost surely, 2^158603894117 is an apocalyptic number.

It is an amenable number.

158603894117 is a deficient number, since it is larger than the sum of its proper divisors (1).

158603894117 is an equidigital number, since it uses as much as digits as its factorization.

158603894117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 158603894117 in words is "one hundred fifty-eight billion, six hundred three million, eight hundred ninety-four thousand, one hundred seventeen".