16556115500 has 96 divisors (see below), whose sum is σ = 38163652800. Its totient is φ = 6257088000.

The previous prime is 16556115473. The next prime is 16556115523. The reversal of 16556115500 is 551165561.

16556115500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×16556115500³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3883370 + ... + 3887630.

It is an arithmetic number, because the mean of its divisors is an integer number (397538050).

Almost surely, 2^16556115500 is an apocalyptic number.

16556115500 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 16556115500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19081826400).

16556115500 is an abundant number, since it is smaller than the sum of its proper divisors (21607537300).

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

16556115500 is a wasteful number, since it uses less digits than its factorization.

16556115500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708 (or 4696 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 16556115500 in words is "sixteen billion, five hundred fifty-six million, one hundred fifteen thousand, five hundred".