16616005505 has 8 divisors (see below), whose sum is σ = 21751861824. Its totient is φ = 12084367600.

The previous prime is 16616005501. The next prime is 16616005573. The reversal of 16616005505 is 50550061661.

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

It is not a de Polignac number, because 16616005505 - 2² = 16616005501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16616005501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151054541 + ... + 151054650.

It is an arithmetic number, because the mean of its divisors is an integer number (2718982728).

Almost surely, 2^16616005505 is an apocalyptic number.

It is an amenable number.

16616005505 is a deficient number, since it is larger than the sum of its proper divisors (5135856319).

16616005505 is a wasteful number, since it uses less digits than its factorization.

16616005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302109207.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 16616005505 in words is "sixteen billion, six hundred sixteen million, five thousand, five hundred five".