16504435116 has 36 divisors (see below), whose sum is σ = 44928741312. Its totient is φ = 5078287584.

The previous prime is 16504435111. The next prime is 16504435121. The reversal of 16504435116 is 61153440561.

16504435116 is a `hidden beast` number, since 1 + 6 + 504 + 4 + 35 + 116 = 666.

It is an interprime number because it is at equal distance from previous prime (16504435111) and next prime (16504435121).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16504435111) 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, 17632476 + ... + 17633411.

It is an arithmetic number, because the mean of its divisors is an integer number (1248020592).

Almost surely, 2^16504435116 is an apocalyptic number.

It is an amenable number.

16504435116 is an abundant number, since it is smaller than the sum of its proper divisors (28424306196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16504435116 is a wasteful number, since it uses less digits than its factorization.

16504435116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35265910 (or 35265905 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 16504435116 its reverse (61153440561), we get a palindrome (77657875677).

The spelling of 16504435116 in words is "sixteen billion, five hundred four million, four hundred thirty-five thousand, one hundred sixteen".