16404436550 has 48 divisors (see below), whose sum is σ = 31361988240. Its totient is φ = 6379320960.

The previous prime is 16404436507. The next prime is 16404436561. The reversal of 16404436550 is 5563440461.

It is a Curzon number.

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, 2992412 + ... + 2997888.

It is an arithmetic number, because the mean of its divisors is an integer number (653374755).

Almost surely, 2^16404436550 is an apocalyptic number.

16404436550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16404436550 is a deficient number, since it is larger than the sum of its proper divisors (14957551690).

16404436550 is a wasteful number, since it uses less digits than its factorization.

16404436550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145 (or 7140 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 16404436550 in words is "sixteen billion, four hundred four million, four hundred thirty-six thousand, five hundred fifty".