16445633564 has 6 divisors (see below), whose sum is σ = 28779858744. Its totient is φ = 8222816780.

The previous prime is 16445633551. The next prime is 16445633591. The reversal of 16445633564 is 46533654461.

16445633564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2055704192 + ... + 2055704199.

It is an arithmetic number, because the mean of its divisors is an integer number (4796643124).

Almost surely, 2^16445633564 is an apocalyptic number.

It is an amenable number.

16445633564 is a deficient number, since it is larger than the sum of its proper divisors (12334225180).

16445633564 is a wasteful number, since it uses less digits than its factorization.

16445633564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111408395 (or 4111408393 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 47.

The spelling of 16445633564 in words is "sixteen billion, four hundred forty-five million, six hundred thirty-three thousand, five hundred sixty-four".