158016171109 has 2 divisors, whose sum is σ = 158016171110. Its totient is φ = 158016171108.

The previous prime is 158016171101. The next prime is 158016171121. The reversal of 158016171109 is 901171610851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157705882884 + 310288225 = 397122^2 + 17615^2 .

It is a cyclic number.

It is not a de Polignac number, because 158016171109 - 2³ = 158016171101 is a prime.

It is a super-2 number, since 2×158016171109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158016171101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79008085554 + 79008085555.

It is an arithmetic number, because the mean of its divisors is an integer number (79008085555).

Almost surely, 2^158016171109 is an apocalyptic number.

It is an amenable number.

158016171109 is a deficient number, since it is larger than the sum of its proper divisors (1).

158016171109 is an equidigital number, since it uses as much as digits as its factorization.

158016171109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 40.

The spelling of 158016171109 in words is "one hundred fifty-eight billion, sixteen million, one hundred seventy-one thousand, one hundred nine".