158177287109 has 2 divisors, whose sum is σ = 158177287110. Its totient is φ = 158177287108.

The previous prime is 158177287063. The next prime is 158177287127. The reversal of 158177287109 is 901782771851.

158177287109 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., 120202970209 + 37974316900 = 346703^2 + 194870^2 .

It is a cyclic number.

It is not a de Polignac number, because 158177287109 - 2³² = 153882319813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158177287159) 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, 79088643554 + 79088643555.

It is an arithmetic number, because the mean of its divisors is an integer number (79088643555).

Almost surely, 2^158177287109 is an apocalyptic number.

It is an amenable number.

158177287109 is a deficient number, since it is larger than the sum of its proper divisors (1).

158177287109 is an equidigital number, since it uses as much as digits as its factorization.

158177287109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975680, while the sum is 56.

The spelling of 158177287109 in words is "one hundred fifty-eight billion, one hundred seventy-seven million, two hundred eighty-seven thousand, one hundred nine".