1666003089445 has 16 divisors (see below), whose sum is σ = 2001001868352. Its totient is φ = 1331603965440.

The previous prime is 1666003089437. The next prime is 1666003089463. The reversal of 1666003089445 is 5449803006661.

It is a happy number.

It is not a de Polignac number, because 1666003089445 - 2³ = 1666003089437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1666003089392 and 1666003089401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97287654 + ... + 97304776.

It is an arithmetic number, because the mean of its divisors is an integer number (125062616772).

Almost surely, 2^{1666003089445} is an apocalyptic number.

It is an amenable number.

1666003089445 is a deficient number, since it is larger than the sum of its proper divisors (334998778907).

1666003089445 is a wasteful number, since it uses less digits than its factorization.

1666003089445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33492.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 1666003089445 in words is "one trillion, six hundred sixty-six billion, three million, eighty-nine thousand, four hundred forty-five".