16624745646 has 32 divisors (see below), whose sum is σ = 33455773440. Its totient is φ = 5507240256.

The previous prime is 16624745633. The next prime is 16624745677. The reversal of 16624745646 is 64654742661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2237730 + ... + 2245146.

It is an arithmetic number, because the mean of its divisors is an integer number (1045492920).

Almost surely, 2^16624745646 is an apocalyptic number.

16624745646 is an abundant number, since it is smaller than the sum of its proper divisors (16831027794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16624745646 is a wasteful number, since it uses less digits than its factorization.

16624745646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9688.

The product of its digits is 5806080, while the sum is 51.

The spelling of 16624745646 in words is "sixteen billion, six hundred twenty-four million, seven hundred forty-five thousand, six hundred forty-six".