165532175477 has 2 divisors, whose sum is σ = 165532175478. Its totient is φ = 165532175476.

The previous prime is 165532175467. The next prime is 165532175533. The reversal of 165532175477 is 774571235561.

165532175477 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., 151384024561 + 14148150916 = 389081^2 + 118946^2 .

It is a cyclic number.

It is not a de Polignac number, because 165532175477 - 2²⁴ = 165515398261 is a prime.

It is a super-2 number, since 2×165532175477² (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 (165532175467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82766087738 + 82766087739.

It is an arithmetic number, because the mean of its divisors is an integer number (82766087739).

Almost surely, 2^165532175477 is an apocalyptic number.

It is an amenable number.

165532175477 is a deficient number, since it is larger than the sum of its proper divisors (1).

165532175477 is an equidigital number, since it uses as much as digits as its factorization.

165532175477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6174000, while the sum is 53.

The spelling of 165532175477 in words is "one hundred sixty-five billion, five hundred thirty-two million, one hundred seventy-five thousand, four hundred seventy-seven".