158369823452161 has 2 divisors, whose sum is σ = 158369823452162. Its totient is φ = 158369823452160.

The previous prime is 158369823452143. The next prime is 158369823452173. The reversal of 158369823452161 is 161254328963851.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147036965774400 + 11332857677761 = 12125880^2 + 3366431^2 .

It is a cyclic number.

It is not a de Polignac number, because 158369823452161 - 2¹⁹ = 158369822927873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158369823452093 and 158369823452102.

It is not a weakly prime, because it can be changed into another prime (158369823452761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79184911726080 + 79184911726081.

It is an arithmetic number, because the mean of its divisors is an integer number (79184911726081).

Almost surely, 2^{158369823452161} is an apocalyptic number.

It is an amenable number.

158369823452161 is a deficient number, since it is larger than the sum of its proper divisors (1).

158369823452161 is an equidigital number, since it uses as much as digits as its factorization.

158369823452161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74649600, while the sum is 64.

The spelling of 158369823452161 in words is "one hundred fifty-eight trillion, three hundred sixty-nine billion, eight hundred twenty-three million, four hundred fifty-two thousand, one hundred sixty-one".