165439845582964 has 6 divisors (see below), whose sum is σ = 289519729770194. Its totient is φ = 82719922791480.

The previous prime is 165439845582899. The next prime is 165439845583031. The reversal of 165439845582964 is 469285548934561.

It can be written as a sum of positive squares in only one way, i.e., 153838328372964 + 11601517210000 = 12403158^2 + 3406100^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20679980697867 + ... + 20679980697874.

Almost surely, 2^{165439845582964} is an apocalyptic number.

It is an amenable number.

165439845582964 is a deficient number, since it is larger than the sum of its proper divisors (124079884187230).

165439845582964 is a wasteful number, since it uses less digits than its factorization.

165439845582964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41359961395745 (or 41359961395743 counting only the distinct ones).

The product of its digits is 8957952000, while the sum is 79.

The spelling of 165439845582964 in words is "one hundred sixty-five trillion, four hundred thirty-nine billion, eight hundred forty-five million, five hundred eighty-two thousand, nine hundred sixty-four".