16715989500 has 384 divisors, whose sum is σ = 60519094272. Its totient is φ = 3497472000.

The previous prime is 16715989447. The next prime is 16715989513. The reversal of 16715989500 is 598951761.

It is a super-2 number, since 2×16715989500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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 127 ways as a sum of consecutive naturals, for example, 6603235 + ... + 6605765.

It is an arithmetic number, because the mean of its divisors is an integer number (157601808).

Almost surely, 2^16715989500 is an apocalyptic number.

16715989500 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 16715989500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30259547136).

16715989500 is an abundant number, since it is smaller than the sum of its proper divisors (43803104772).

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

16715989500 is a wasteful number, since it uses less digits than its factorization.

16715989500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614 (or 2602 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 51.

The spelling of 16715989500 in words is "sixteen billion, seven hundred fifteen million, nine hundred eighty-nine thousand, five hundred".