16523501441 has 4 divisors (see below), whose sum is σ = 17495472132. Its totient is φ = 15551530752.

The previous prime is 16523501417. The next prime is 16523501447. The reversal of 16523501441 is 14410532561.

16523501441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4874832400 + 11648669041 = 69820^2 + 107929^2 .

It is a cyclic number.

It is not a de Polignac number, because 16523501441 - 2¹⁰ = 16523500417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16523501398 and 16523501407.

It is not an unprimeable number, because it can be changed into a prime (16523501447) 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 3 ways as a sum of consecutive naturals, for example, 485985320 + ... + 485985353.

It is an arithmetic number, because the mean of its divisors is an integer number (4373868033).

Almost surely, 2^16523501441 is an apocalyptic number.

It is an amenable number.

16523501441 is a deficient number, since it is larger than the sum of its proper divisors (971970691).

16523501441 is an equidigital number, since it uses as much as digits as its factorization.

16523501441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971970690.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 16523501441 in words is "sixteen billion, five hundred twenty-three million, five hundred one thousand, four hundred forty-one".