16691488736 has 48 divisors (see below), whose sum is σ = 35520962400. Its totient is φ = 7675074048.

The previous prime is 16691488687. The next prime is 16691488741. The reversal of 16691488736 is 63788419661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37325 + ... + 186483.

It is an arithmetic number, because the mean of its divisors is an integer number (740020050).

Almost surely, 2^16691488736 is an apocalyptic number.

16691488736 is a gapful number since it is divisible by the number (16) 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 16691488736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17760481200).

16691488736 is an abundant number, since it is smaller than the sum of its proper divisors (18829473664).

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

16691488736 is a wasteful number, since it uses less digits than its factorization.

16691488736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149451 (or 149443 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 59.

The spelling of 16691488736 in words is "sixteen billion, six hundred ninety-one million, four hundred eighty-eight thousand, seven hundred thirty-six".