16987391100 has 324 divisors, whose sum is σ = 57006677728. Its totient is φ = 4230144000.

The previous prime is 16987391041. The next prime is 16987391119. The reversal of 16987391100 is 119378961.

16987391100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 107 ways as a sum of consecutive naturals, for example, 62683965 + ... + 62684235.

Almost surely, 2^16987391100 is an apocalyptic number.

16987391100 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 16987391100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28503338864).

16987391100 is an abundant number, since it is smaller than the sum of its proper divisors (40019286628).

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

16987391100 is a wasteful number, since it uses less digits than its factorization.

16987391100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 16987391100 in words is "sixteen billion, nine hundred eighty-seven million, three hundred ninety-one thousand, one hundred".