165441158255497 has 2 divisors, whose sum is σ = 165441158255498. Its totient is φ = 165441158255496.

The previous prime is 165441158255459. The next prime is 165441158255543. The reversal of 165441158255497 is 794552851144561.

165441158255497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112118682909321 + 53322475346176 = 10588611^2 + 7302224^2 .

It is a cyclic number.

It is not a de Polignac number, because 165441158255497 - 2¹⁹ = 165441157731209 is a prime.

It is not a weakly prime, because it can be changed into another prime (165441158255447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82720579127748 + 82720579127749.

It is an arithmetic number, because the mean of its divisors is an integer number (82720579127749).

Almost surely, 2^{165441158255497} is an apocalyptic number.

It is an amenable number.

165441158255497 is a deficient number, since it is larger than the sum of its proper divisors (1).

165441158255497 is an equidigital number, since it uses as much as digits as its factorization.

165441158255497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920000, while the sum is 67.

The spelling of 165441158255497 in words is "one hundred sixty-five trillion, four hundred forty-one billion, one hundred fifty-eight million, two hundred fifty-five thousand, four hundred ninety-seven".