16616445300 has 360 divisors, whose sum is σ = 66297034496. Its totient is φ = 3505731840.

The previous prime is 16616445281. The next prime is 16616445301. The reversal of 16616445300 is 354461661.

It is a happy number.

16616445300 is a `hidden beast` number, since 1 + 6 + 6 + 1 + 644 + 5 + 3 + 0 + 0 = 666.

It is a super-2 number, since 2×16616445300² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16616445301) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 725829 + ... + 748371.

Almost surely, 2^16616445300 is an apocalyptic number.

16616445300 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 16616445300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33148517248).

16616445300 is an abundant number, since it is smaller than the sum of its proper divisors (49680589196).

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

16616445300 is a wasteful number, since it uses less digits than its factorization.

16616445300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22589 (or 22573 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 16616445300 in words is "sixteen billion, six hundred sixteen million, four hundred forty-five thousand, three hundred".