158165294117 has 2 divisors, whose sum is σ = 158165294118. Its totient is φ = 158165294116.

The previous prime is 158165294101. The next prime is 158165294143. The reversal of 158165294117 is 711492561851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158128703716 + 36590401 = 397654^2 + 6049^2 .

It is a cyclic number.

It is not a de Polignac number, because 158165294117 - 2⁴ = 158165294101 is a prime.

It is a super-2 number, since 2×158165294117² (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 (158165294317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79082647058 + 79082647059.

It is an arithmetic number, because the mean of its divisors is an integer number (79082647059).

Almost surely, 2^158165294117 is an apocalyptic number.

It is an amenable number.

158165294117 is a deficient number, since it is larger than the sum of its proper divisors (1).

158165294117 is an equidigital number, since it uses as much as digits as its factorization.

158165294117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 50.

The spelling of 158165294117 in words is "one hundred fifty-eight billion, one hundred sixty-five million, two hundred ninety-four thousand, one hundred seventeen".