16523644104 has 48 divisors (see below), whose sum is σ = 48819859920. Its totient is φ = 5007164640.

The previous prime is 16523644103. The next prime is 16523644121. The reversal of 16523644104 is 40144632561.

16523644104 is a `hidden beast` number, since 1 + 6 + 5 + 2 + 3 + 644 + 1 + 0 + 4 = 666.

16523644104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16523644103) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10430802 + ... + 10432385.

It is an arithmetic number, because the mean of its divisors is an integer number (1017080415).

Almost surely, 2^16523644104 is an apocalyptic number.

It is an amenable number.

16523644104 is an abundant number, since it is smaller than the sum of its proper divisors (32296215816).

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

16523644104 is a wasteful number, since it uses less digits than its factorization.

16523644104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20863210 (or 20863203 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 16523644104 in words is "sixteen billion, five hundred twenty-three million, six hundred forty-four thousand, one hundred four".