16445501100 has 432 divisors, whose sum is σ = 60316139520. Its totient is φ = 3670617600.

The previous prime is 16445501099. The next prime is 16445501131. The reversal of 16445501100 is 110554461.

16445501100 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 550 + 1 + 100 = 666.

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 143 ways as a sum of consecutive naturals, for example, 86102005 + ... + 86102195.

Almost surely, 2^16445501100 is an apocalyptic number.

16445501100 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 16445501100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30158069760).

16445501100 is an abundant number, since it is smaller than the sum of its proper divisors (43870638420).

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

16445501100 is a wasteful number, since it uses less digits than its factorization.

16445501100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 16445501100 in words is "sixteen billion, four hundred forty-five million, five hundred one thousand, one hundred".