16513644041 has 8 divisors (see below), whose sum is σ = 16691197320. Its totient is φ = 16336240128.

The previous prime is 16513644001. The next prime is 16513644047. The reversal of 16513644041 is 14044631561.

It can be written as a sum of positive squares in 4 ways, for example, as 366025 + 16513278016 = 605^2 + 128504^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16513644041 - 2⁶ = 16513643977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16513643992 and 16513644010.

It is not an unprimeable number, because it can be changed into a prime (16513644047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192515 + ... + 264743.

It is an arithmetic number, because the mean of its divisors is an integer number (2086399665).

Almost surely, 2^16513644041 is an apocalyptic number.

It is an amenable number.

16513644041 is a deficient number, since it is larger than the sum of its proper divisors (177553279).

16513644041 is an equidigital number, since it uses as much as digits as its factorization.

16513644041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74683.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 16513644041 in words is "sixteen billion, five hundred thirteen million, six hundred forty-four thousand, forty-one".