16505535245 has 24 divisors (see below), whose sum is σ = 20332674072. Its totient is φ = 12859344000.

The previous prime is 16505535181. The next prime is 16505535257. The reversal of 16505535245 is 54253550561.

It can be written as a sum of positive squares in 4 ways, for example, as 2082005641 + 14423529604 = 45629^2 + 120098^2 .

It is not a de Polignac number, because 16505535245 - 2⁶ = 16505535181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3233195 + ... + 3238295.

It is an arithmetic number, because the mean of its divisors is an integer number (847194753).

Almost surely, 2^16505535245 is an apocalyptic number.

It is an amenable number.

16505535245 is a deficient number, since it is larger than the sum of its proper divisors (3827138827).

16505535245 is an equidigital number, since it uses as much as digits as its factorization.

16505535245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373 (or 5270 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 16505535245 in words is "sixteen billion, five hundred five million, five hundred thirty-five thousand, two hundred forty-five".