16565722792 has 8 divisors (see below), whose sum is σ = 31060730250. Its totient is φ = 8282861392.

The previous prime is 16565722787. The next prime is 16565722801. The reversal of 16565722792 is 29722756561.

It can be written as a sum of positive squares in only one way, i.e., 16107163396 + 458559396 = 126914^2 + 21414^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035357667 + ... + 1035357682.

Almost surely, 2^16565722792 is an apocalyptic number.

It is an amenable number.

16565722792 is a deficient number, since it is larger than the sum of its proper divisors (14495007458).

16565722792 is a wasteful number, since it uses less digits than its factorization.

16565722792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070715355 (or 2070715351 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 52.

The spelling of 16565722792 in words is "sixteen billion, five hundred sixty-five million, seven hundred twenty-two thousand, seven hundred ninety-two".