16516115233321 has 8 divisors (see below), whose sum is σ = 18018051306624. Its totient is φ = 15014257668720.

The previous prime is 16516115233309. The next prime is 16516115233337. The reversal of 16516115233321 is 12333251161561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16516115233321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16516115231321) 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 7 ways as a sum of consecutive naturals, for example, 19186870 + ... + 20029183.

It is an arithmetic number, because the mean of its divisors is an integer number (2252256413328).

Almost surely, 2^{16516115233321} is an apocalyptic number.

16516115233321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16516115233321 is a deficient number, since it is larger than the sum of its proper divisors (1501936073303).

16516115233321 is a wasteful number, since it uses less digits than its factorization.

16516115233321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39254351.

The product of its digits is 97200, while the sum is 40.

Adding to 16516115233321 its reverse (12333251161561), we get a palindrome (28849366394882).

The spelling of 16516115233321 in words is "sixteen trillion, five hundred sixteen billion, one hundred fifteen million, two hundred thirty-three thousand, three hundred twenty-one".