165171103773607 has 2 divisors, whose sum is σ = 165171103773608. Its totient is φ = 165171103773606.

The previous prime is 165171103773493. The next prime is 165171103773619. The reversal of 165171103773607 is 706377301171561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165171103773607 - 2¹⁹ = 165171103249319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165171103773407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82585551886803 + 82585551886804.

It is an arithmetic number, because the mean of its divisors is an integer number (82585551886804).

Almost surely, 2^{165171103773607} is an apocalyptic number.

165171103773607 is a deficient number, since it is larger than the sum of its proper divisors (1).

165171103773607 is an equidigital number, since it uses as much as digits as its factorization.

165171103773607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3889620, while the sum is 55.

The spelling of 165171103773607 in words is "one hundred sixty-five trillion, one hundred seventy-one billion, one hundred three million, seven hundred seventy-three thousand, six hundred seven".