16090421100 has 144 divisors (see below), whose sum is σ = 50633738400. Its totient is φ = 3921408000.

The previous prime is 16090421099. The next prime is 16090421117. The reversal of 16090421100 is 112409061.

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 47 ways as a sum of consecutive naturals, for example, 373476 + ... + 414324.

Almost surely, 2^16090421100 is an apocalyptic number.

16090421100 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 16090421100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25316869200).

16090421100 is an abundant number, since it is smaller than the sum of its proper divisors (34543317300).

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

16090421100 is a wasteful number, since it uses less digits than its factorization.

16090421100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40980 (or 40973 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 16090421100 in words is "sixteen billion, ninety million, four hundred twenty-one thousand, one hundred".