16500520404432 has 120 divisors (see below), whose sum is σ = 46922365526400. Its totient is φ = 5412279204864.

The previous prime is 16500520404419. The next prime is 16500520404443. The reversal of 16500520404432 is 23440402500561.

16500520404432 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 0 + 5 + 204 + 0 + 443 + 2 = 666.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1385832 + ... + 5909447.

It is an arithmetic number, because the mean of its divisors is an integer number (391019712720).

Almost surely, 2^{16500520404432} is an apocalyptic number.

16500520404432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16500520404432 is an abundant number, since it is smaller than the sum of its proper divisors (30421845121968).

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

16500520404432 is a wasteful number, since it uses less digits than its factorization.

16500520404432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7295545 (or 7295536 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 16500520404432 its reverse (23440402500561), we get a palindrome (39940922904993).

The spelling of 16500520404432 in words is "sixteen trillion, five hundred billion, five hundred twenty million, four hundred four thousand, four hundred thirty-two".