16516820975 has 24 divisors (see below), whose sum is σ = 20601360000. Its totient is φ = 13135943520.

The previous prime is 16516820963. The next prime is 16516821017. The reversal of 16516820975 is 57902861561.

It is not a de Polignac number, because 16516820975 - 2⁶ = 16516820911 is a prime.

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, 3301526 + ... + 3306524.

It is an arithmetic number, because the mean of its divisors is an integer number (858390000).

Almost surely, 2^16516820975 is an apocalyptic number.

16516820975 is a deficient number, since it is larger than the sum of its proper divisors (4084539025).

16516820975 is a wasteful number, since it uses less digits than its factorization.

16516820975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759 (or 5754 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 16516820975 in words is "sixteen billion, five hundred sixteen million, eight hundred twenty thousand, nine hundred seventy-five".