16131995504 has 80 divisors (see below), whose sum is σ = 33687093888. Its totient is φ = 7456751616.

The previous prime is 16131995443. The next prime is 16131995513. The reversal of 16131995504 is 40559913161.

16131995504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3612377 + ... + 3616839.

Almost surely, 2^16131995504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16131995504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16843546944).

16131995504 is an abundant number, since it is smaller than the sum of its proper divisors (17555098384).

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

16131995504 is a wasteful number, since it uses less digits than its factorization.

16131995504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722 (or 4716 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 16131995504 in words is "sixteen billion, one hundred thirty-one million, nine hundred ninety-five thousand, five hundred four".