16504918603 has 12 divisors (see below), whose sum is σ = 16837700040. Its totient is φ = 16176357792.

The previous prime is 16504918601. The next prime is 16504918621. The reversal of 16504918603 is 30681940561.

It is not a de Polignac number, because 16504918603 - 2¹ = 16504918601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16504918603.

It is not an unprimeable number, because it can be changed into a prime (16504918601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1332543 + ... + 1344871.

It is an arithmetic number, because the mean of its divisors is an integer number (1403141670).

Almost surely, 2^16504918603 is an apocalyptic number.

16504918603 is a deficient number, since it is larger than the sum of its proper divisors (332781437).

16504918603 is an equidigital number, since it uses as much as digits as its factorization.

16504918603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12666 (or 12539 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 16504918603 in words is "sixteen billion, five hundred four million, nine hundred eighteen thousand, six hundred three".