16656005550 has 48 divisors (see below), whose sum is σ = 41632192512. Its totient is φ = 4406623200.

The previous prime is 16656005543. The next prime is 16656005563. The reversal of 16656005550 is 5550065661.

16656005550 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16656005499 and 16656005508.

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, 418116 + ... + 456215.

It is an arithmetic number, because the mean of its divisors is an integer number (867337344).

Almost surely, 2^16656005550 is an apocalyptic number.

16656005550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16656005550 is an abundant number, since it is smaller than the sum of its proper divisors (24976186962).

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

16656005550 is a wasteful number, since it uses less digits than its factorization.

16656005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874473 (or 874468 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 16656005550 in words is "sixteen billion, six hundred fifty-six million, five thousand, five hundred fifty".