16118575805 has 24 divisors (see below), whose sum is σ = 20477368800. Its totient is φ = 12146345280.

The previous prime is 16118575801. The next prime is 16118575813. The reversal of 16118575805 is 50857581161.

It is a happy number.

It is not a de Polignac number, because 16118575805 - 2² = 16118575801 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16118575805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16118575801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3109706 + ... + 3114884.

It is an arithmetic number, because the mean of its divisors is an integer number (853223700).

Almost surely, 2^16118575805 is an apocalyptic number.

It is an amenable number.

16118575805 is a deficient number, since it is larger than the sum of its proper divisors (4358792995).

16118575805 is an equidigital number, since it uses as much as digits as its factorization.

16118575805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565 (or 5384 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 47.

The spelling of 16118575805 in words is "sixteen billion, one hundred eighteen million, five hundred seventy-five thousand, eight hundred five".