165622446455644 has 12 divisors (see below), whose sum is σ = 306888650785584. Its totient is φ = 77939974802624.

The previous prime is 165622446455591. The next prime is 165622446455647. The reversal of 165622446455644 is 446554644226561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165622446455647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217812106224 + ... + 1217812106359.

It is an arithmetic number, because the mean of its divisors is an integer number (25574054232132).

Almost surely, 2^{165622446455644} is an apocalyptic number.

It is an amenable number.

165622446455644 is a deficient number, since it is larger than the sum of its proper divisors (141266204329940).

165622446455644 is a wasteful number, since it uses less digits than its factorization.

165622446455644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435624212604 (or 2435624212602 counting only the distinct ones).

The product of its digits is 663552000, while the sum is 64.

The spelling of 165622446455644 in words is "one hundred sixty-five trillion, six hundred twenty-two billion, four hundred forty-six million, four hundred fifty-five thousand, six hundred forty-four".