16505535223 has 8 divisors (see below), whose sum is σ = 17138174400. Its totient is φ = 15877128288.

The previous prime is 16505535181. The next prime is 16505535257. The reversal of 16505535223 is 32253550561.

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

It is a cyclic number.

It is not a de Polignac number, because 16505535223 - 2⁹ = 16505534711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16505535283) 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, 1050111 + ... + 1065712.

It is an arithmetic number, because the mean of its divisors is an integer number (2142271800).

Almost surely, 2^16505535223 is an apocalyptic number.

16505535223 is a deficient number, since it is larger than the sum of its proper divisors (632639177).

16505535223 is a wasteful number, since it uses less digits than its factorization.

16505535223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116121.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 16505535223 in words is "sixteen billion, five hundred five million, five hundred thirty-five thousand, two hundred twenty-three".