16216404605 has 8 divisors (see below), whose sum is σ = 19464464472. Its totient is φ = 12969937728.

The previous prime is 16216404553. The next prime is 16216404661. The reversal of 16216404605 is 50640461261.

It can be written as a sum of positive squares in 4 ways, for example, as 2633434489 + 13582970116 = 51317^2 + 116546^2 .

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 16216404605 - 2³⁰ = 15142662781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375734 + ... + 416663.

It is an arithmetic number, because the mean of its divisors is an integer number (2433058059).

Almost surely, 2^16216404605 is an apocalyptic number.

It is an amenable number.

16216404605 is a deficient number, since it is larger than the sum of its proper divisors (3248059867).

16216404605 is an equidigital number, since it uses as much as digits as its factorization.

16216404605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796495.

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

Adding to 16216404605 its reverse (50640461261), we get a palindrome (66856865866).

The spelling of 16216404605 in words is "sixteen billion, two hundred sixteen million, four hundred four thousand, six hundred five".