16002113520 has 80 divisors (see below), whose sum is σ = 49730558112. Its totient is φ = 4256563200.

The previous prime is 16002113497. The next prime is 16002113537. The reversal of 16002113520 is 2531120061.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13104 + ... + 179376.

Almost surely, 2^16002113520 is an apocalyptic number.

16002113520 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 16002113520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24865279056).

16002113520 is an abundant number, since it is smaller than the sum of its proper divisors (33728444592).

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

16002113520 is a wasteful number, since it uses less digits than its factorization.

16002113520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166690 (or 166684 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 16002113520 its reverse (2531120061), we get a palindrome (18533233581).

The spelling of 16002113520 in words is "sixteen billion, two million, one hundred thirteen thousand, five hundred twenty".