16433320621775 has 24 divisors (see below), whose sum is σ = 20791097391744. Its totient is φ = 12881973736800.

The previous prime is 16433320621747. The next prime is 16433320621853. The reversal of 16433320621775 is 57712602333461.

It is not a de Polignac number, because 16433320621775 - 2¹⁰ = 16433320620751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28110089 + ... + 28688738.

It is an arithmetic number, because the mean of its divisors is an integer number (866295724656).

Almost surely, 2^{16433320621775} is an apocalyptic number.

16433320621775 is a deficient number, since it is larger than the sum of its proper divisors (4357776769969).

16433320621775 is a wasteful number, since it uses less digits than its factorization.

16433320621775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56799071 (or 56799066 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 16433320621775 in words is "sixteen trillion, four hundred thirty-three billion, three hundred twenty million, six hundred twenty-one thousand, seven hundred seventy-five".