16606550556 has 96 divisors (see below), whose sum is σ = 43522536960. Its totient is φ = 5475600000.

The previous prime is 16606550539. The next prime is 16606550573. The reversal of 16606550556 is 65505560661.

It is an interprime number because it is at equal distance from previous prime (16606550539) and next prime (16606550573).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4091280 + ... + 4095336.

It is an arithmetic number, because the mean of its divisors is an integer number (453359760).

Almost surely, 2^16606550556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16606550556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21761268480).

16606550556 is an abundant number, since it is smaller than the sum of its proper divisors (26915986404).

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

16606550556 is a wasteful number, since it uses less digits than its factorization.

16606550556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472 (or 4464 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 16606550556 in words is "sixteen billion, six hundred six million, five hundred fifty thousand, five hundred fifty-six".