1665283605064 has 16 divisors (see below), whose sum is σ = 3122532827820. Its totient is φ = 832608184320.

The previous prime is 1665283605059. The next prime is 1665283605079. The reversal of 1665283605064 is 4605063825661.

It can be written as a sum of positive squares in 2 ways, for example, as 1659845722500 + 5437882564 = 1288350^2 + 73742^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3991129 + ... + 4388584.

Almost surely, 2^{1665283605064} is an apocalyptic number.

It is an amenable number.

1665283605064 is a deficient number, since it is larger than the sum of its proper divisors (1457249222756).

1665283605064 is a wasteful number, since it uses less digits than its factorization.

1665283605064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8404560 (or 8404556 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 1665283605064 in words is "one trillion, six hundred sixty-five billion, two hundred eighty-three million, six hundred five thousand, sixty-four".