16556122000 has 160 divisors (see below), whose sum is σ = 44110355328. Its totient is φ = 5960000000.

The previous prime is 16556121931. The next prime is 16556122013. The reversal of 16556122000 is 22165561.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16556122000.

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 31 ways as a sum of consecutive naturals, for example, 2218275 + ... + 2225725.

Almost surely, 2^16556122000 is an apocalyptic number.

16556122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16556122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22055177664).

16556122000 is an abundant number, since it is smaller than the sum of its proper divisors (27554233328).

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

16556122000 is a wasteful number, since it uses less digits than its factorization.

16556122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7586 (or 7570 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 16556122000 its reverse (22165561), we get a palindrome (16578287561).

It can be divided in two parts, 165 and 56122000, that added together give a palindrome (56122165).

The spelling of 16556122000 in words is "sixteen billion, five hundred fifty-six million, one hundred twenty-two thousand".