16109009280 has 768 divisors, whose sum is σ = 69565991040. Its totient is φ = 3344302080.

The previous prime is 16109009269. The next prime is 16109009297. The reversal of 16109009280 is 8290090161.

It is a super-2 number, since 2×16109009280² (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 an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38263470 + ... + 38263890.

Almost surely, 2^16109009280 is an apocalyptic number.

16109009280 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 16109009280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34782995520).

16109009280 is an abundant number, since it is smaller than the sum of its proper divisors (53456981760).

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

16109009280 is a wasteful number, since it uses less digits than its factorization.

16109009280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 16109009280 in words is "sixteen billion, one hundred nine million, nine thousand, two hundred eighty".