16661330115 has 8 divisors (see below), whose sum is σ = 26658128208. Its totient is φ = 8886042720.

The previous prime is 16661330089. The next prime is 16661330137. The reversal of 16661330115 is 51103316661.

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

It is not a de Polignac number, because 16661330115 - 2⁵ = 16661330083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555377656 + ... + 555377685.

It is an arithmetic number, because the mean of its divisors is an integer number (3332266026).

Almost surely, 2^16661330115 is an apocalyptic number.

16661330115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16661330115 is a deficient number, since it is larger than the sum of its proper divisors (9996798093).

16661330115 is a wasteful number, since it uses less digits than its factorization.

16661330115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110755349.

The product of its (nonzero) digits is 9720, while the sum is 33.

Adding to 16661330115 its reverse (51103316661), we get a palindrome (67764646776).

The spelling of 16661330115 in words is "sixteen billion, six hundred sixty-one million, three hundred thirty thousand, one hundred fifteen".