16205394888 has 96 divisors (see below), whose sum is σ = 44122890240. Its totient is φ = 5373181440.

The previous prime is 16205394859. The next prime is 16205394911. The reversal of 16205394888 is 88849350261.

16205394888 is a `hidden beast` number, since 1 + 6 + 20 + 539 + 4 + 8 + 88 = 666.

It is a super-4 number, since 4×16205394888⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 16352073 + ... + 16353063.

It is an arithmetic number, because the mean of its divisors is an integer number (459613440).

Almost surely, 2^16205394888 is an apocalyptic number.

16205394888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16205394888 is an abundant number, since it is smaller than the sum of its proper divisors (27917495352).

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

16205394888 is a wasteful number, since it uses less digits than its factorization.

16205394888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 16205394888 in words is "sixteen billion, two hundred five million, three hundred ninety-four thousand, eight hundred eighty-eight".