16459444775 has 12 divisors (see below), whose sum is σ = 20421777000. Its totient is φ = 13159771680.

The previous prime is 16459444741. The next prime is 16459444867. The reversal of 16459444775 is 57744495461.

It is not a de Polignac number, because 16459444775 - 2¹⁰ = 16459443751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16459444775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151280 + ... + 236229.

It is an arithmetic number, because the mean of its divisors is an integer number (1701814750).

Almost surely, 2^16459444775 is an apocalyptic number.

16459444775 is a deficient number, since it is larger than the sum of its proper divisors (3962332225).

16459444775 is a wasteful number, since it uses less digits than its factorization.

16459444775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389218 (or 389213 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 56.

The spelling of 16459444775 in words is "sixteen billion, four hundred fifty-nine million, four hundred forty-four thousand, seven hundred seventy-five".