16005516661115 has 16 divisors (see below), whose sum is σ = 19358098357248. Its totient is φ = 12703430307456.

The previous prime is 16005516661111. The next prime is 16005516661129. The reversal of 16005516661115 is 51116661550061.

16005516661115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16005516661115 - 2² = 16005516661111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16005516661111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90928529 + ... + 91104381.

It is an arithmetic number, because the mean of its divisors is an integer number (1209881147328).

Almost surely, 2^{16005516661115} is an apocalyptic number.

16005516661115 is a deficient number, since it is larger than the sum of its proper divisors (3352581696133).

16005516661115 is a wasteful number, since it uses less digits than its factorization.

16005516661115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319318.

The product of its (nonzero) digits is 162000, while the sum is 44.

The spelling of 16005516661115 in words is "sixteen trillion, five billion, five hundred sixteen million, six hundred sixty-one thousand, one hundred fifteen".