16521100110 has 96 divisors (see below), whose sum is σ = 43815582720. Its totient is φ = 4317540864.

The previous prime is 16521100033. The next prime is 16521100111. The reversal of 16521100110 is 1100112561.

It is a happy number.

16521100110 is a `hidden beast` number, since 1 + 652 + 1 + 1 + 0 + 0 + 1 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16521100111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6147187 + ... + 6149873.

It is an arithmetic number, because the mean of its divisors is an integer number (456412320).

Almost surely, 2^16521100110 is an apocalyptic number.

16521100110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16521100110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21907791360).

16521100110 is an abundant number, since it is smaller than the sum of its proper divisors (27294482610).

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

16521100110 is a wasteful number, since it uses less digits than its factorization.

16521100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042 (or 4039 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

Adding to 16521100110 its reverse (1100112561), we get a palindrome (17621212671).

The spelling of 16521100110 in words is "sixteen billion, five hundred twenty-one million, one hundred thousand, one hundred ten".