16504766441 has 4 divisors (see below), whose sum is σ = 16505088084. Its totient is φ = 16504444800.

The previous prime is 16504766419. The next prime is 16504766449. The reversal of 16504766441 is 14466740561.

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 5158256041 + 11346510400 = 71821^2 + 106520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16504766441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16504766392 and 16504766401.

It is not an unprimeable number, because it can be changed into a prime (16504766449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64700 + ... + 192861.

It is an arithmetic number, because the mean of its divisors is an integer number (4126272021).

Almost surely, 2^16504766441 is an apocalyptic number.

It is an amenable number.

16504766441 is a deficient number, since it is larger than the sum of its proper divisors (321643).

16504766441 is an equidigital number, since it uses as much as digits as its factorization.

16504766441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321642.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 16504766441 in words is "sixteen billion, five hundred four million, seven hundred sixty-six thousand, four hundred forty-one".