16811946558 has 48 divisors (see below), whose sum is σ = 40811327856. Its totient is φ = 4956837120.

The previous prime is 16811946539. The next prime is 16811946611. The reversal of 16811946558 is 85564911861.

16811946558 is a `hidden beast` number, since 1 + 6 + 81 + 1 + 9 + 4 + 6 + 558 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1140091 + ... + 1154742.

It is an arithmetic number, because the mean of its divisors is an integer number (850235997).

Almost surely, 2^16811946558 is an apocalyptic number.

16811946558 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16811946558 is an abundant number, since it is smaller than the sum of its proper divisors (23999381298).

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

16811946558 is a wasteful number, since it uses less digits than its factorization.

16811946558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294889 (or 2294886 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 54.

It can be divided in two parts, 16811 and 946558, that added together give a palindrome (963369).

The spelling of 16811946558 in words is "sixteen billion, eight hundred eleven million, nine hundred forty-six thousand, five hundred fifty-eight".