16520275116 has 72 divisors (see below), whose sum is σ = 43976878400. Its totient is φ = 5214624480.

The previous prime is 16520275063. The next prime is 16520275129. The reversal of 16520275116 is 61157202561.

16520275116 is a `hidden beast` number, since 16 + 520 + 2 + 7 + 5 + 116 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2225451 + ... + 2232861.

Almost surely, 2^16520275116 is an apocalyptic number.

It is an amenable number.

16520275116 is an abundant number, since it is smaller than the sum of its proper divisors (27456603284).

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

16520275116 is a wasteful number, since it uses less digits than its factorization.

16520275116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10699 (or 10694 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

Adding to 16520275116 its reverse (61157202561), we get a palindrome (77677477677).

The spelling of 16520275116 in words is "sixteen billion, five hundred twenty million, two hundred seventy-five thousand, one hundred sixteen".