165017327055527 has 2 divisors, whose sum is σ = 165017327055528. Its totient is φ = 165017327055526.

The previous prime is 165017327055467. The next prime is 165017327055667. The reversal of 165017327055527 is 725550723710561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165017327055527 - 2⁶ = 165017327055463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165017327055227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82508663527763 + 82508663527764.

It is an arithmetic number, because the mean of its divisors is an integer number (82508663527764).

Almost surely, 2^{165017327055527} is an apocalyptic number.

165017327055527 is a deficient number, since it is larger than the sum of its proper divisors (1).

165017327055527 is an equidigital number, since it uses as much as digits as its factorization.

165017327055527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15435000, while the sum is 56.

The spelling of 165017327055527 in words is "one hundred sixty-five trillion, seventeen billion, three hundred twenty-seven million, fifty-five thousand, five hundred twenty-seven".