16616205890 has 32 divisors (see below), whose sum is σ = 30224643264. Its totient is φ = 6576462400.

The previous prime is 16616205817. The next prime is 16616205919. The reversal of 16616205890 is 9850261661.

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 15 ways as a sum of consecutive naturals, for example, 1921757 + ... + 1930383.

It is an arithmetic number, because the mean of its divisors is an integer number (944520102).

Almost surely, 2^16616205890 is an apocalyptic number.

16616205890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16616205890 is a deficient number, since it is larger than the sum of its proper divisors (13608437374).

16616205890 is a wasteful number, since it uses less digits than its factorization.

16616205890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10642.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 16616205890 in words is "sixteen billion, six hundred sixteen million, two hundred five thousand, eight hundred ninety".