1665334016644 has 12 divisors (see below), whose sum is σ = 2976341647104. Its totient is φ = 814950688904.

The previous prime is 1665334016639. The next prime is 1665334016657. The reversal of 1665334016644 is 4466104335661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4429079644 + ... + 4429080019.

It is an arithmetic number, because the mean of its divisors is an integer number (248028470592).

Almost surely, 2^{1665334016644} is an apocalyptic number.

It is an amenable number.

1665334016644 is a deficient number, since it is larger than the sum of its proper divisors (1311007630460).

1665334016644 is a wasteful number, since it uses less digits than its factorization.

1665334016644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8858159714 (or 8858159712 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 1665334016644 in words is "one trillion, six hundred sixty-five billion, three hundred thirty-four million, sixteen thousand, six hundred forty-four".