16530312205 has 16 divisors (see below), whose sum is σ = 21882830400. Its totient is φ = 11886962560.

The previous prime is 16530312191. The next prime is 16530312251. The reversal of 16530312205 is 50221303561.

It is not a de Polignac number, because 16530312205 - 2⁵ = 16530312173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1683595 + ... + 1693384.

It is an arithmetic number, because the mean of its divisors is an integer number (1367676900).

Almost surely, 2^16530312205 is an apocalyptic number.

It is an amenable number.

16530312205 is a deficient number, since it is larger than the sum of its proper divisors (5352518195).

16530312205 is a wasteful number, since it uses less digits than its factorization.

16530312205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377084.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 16530312205 its reverse (50221303561), we get a palindrome (66751615766).

The spelling of 16530312205 in words is "sixteen billion, five hundred thirty million, three hundred twelve thousand, two hundred five".