16324581504 has 128 divisors (see below), whose sum is σ = 54062023680. Its totient is φ = 4240143360.

The previous prime is 16324581491. The next prime is 16324581509. The reversal of 16324581504 is 40518542361.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×16324581504² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16324581509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246484 + ... + 305619.

It is an arithmetic number, because the mean of its divisors is an integer number (422359560).

Almost surely, 2^16324581504 is an apocalyptic number.

16324581504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16324581504 is an abundant number, since it is smaller than the sum of its proper divisors (37737442176).

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

16324581504 is a wasteful number, since it uses less digits than its factorization.

16324581504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552138 (or 552126 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 16324581504 in words is "sixteen billion, three hundred twenty-four million, five hundred eighty-one thousand, five hundred four".