158016178109 has 2 divisors, whose sum is σ = 158016178110. Its totient is φ = 158016178108.

The previous prime is 158016178097. The next prime is 158016178147. The reversal of 158016178109 is 901871610851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149556225625 + 8459952484 = 386725^2 + 91978^2 .

It is a cyclic number.

It is not a de Polignac number, because 158016178109 - 2⁴ = 158016178093 is a prime.

It is a super-2 number, since 2×158016178109² (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 (158016171109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79008089054 + 79008089055.

It is an arithmetic number, because the mean of its divisors is an integer number (79008089055).

Almost surely, 2^158016178109 is an apocalyptic number.

It is an amenable number.

158016178109 is a deficient number, since it is larger than the sum of its proper divisors (1).

158016178109 is an equidigital number, since it uses as much as digits as its factorization.

158016178109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 47.

The spelling of 158016178109 in words is "one hundred fifty-eight billion, sixteen million, one hundred seventy-eight thousand, one hundred nine".