165144323441522 has 32 divisors (see below), whose sum is σ = 254070168957360. Its totient is φ = 80459271429120.

The previous prime is 165144323441507. The next prime is 165144323441543. The reversal of 165144323441522 is 225144323441561.

It can be written as a sum of positive squares in 8 ways, for example, as 17275586144881 + 147868737296641 = 4156391^2 + 12160129^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241985078 + ... + 242666574.

Almost surely, 2^{165144323441522} is an apocalyptic number.

165144323441522 is a deficient number, since it is larger than the sum of its proper divisors (88925845515838).

165144323441522 is a wasteful number, since it uses less digits than its factorization.

165144323441522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685166.

The product of its digits is 2764800, while the sum is 47.

The spelling of 165144323441522 in words is "one hundred sixty-five trillion, one hundred forty-four billion, three hundred twenty-three million, four hundred forty-one thousand, five hundred twenty-two".