16566535032104 has 16 divisors (see below), whose sum is σ = 32889444549300. Its totient is φ = 7796016485632.

The previous prime is 16566535032083. The next prime is 16566535032107. The reversal of 16566535032104 is 40123053566561.

It can be written as a sum of positive squares in 2 ways, for example, as 12494089951204 + 4072445080900 = 3534698^2 + 2018030^2 .

It is not an unprimeable number, because it can be changed into a prime (16566535032107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60906378659 + ... + 60906378930.

Almost surely, 2^{16566535032104} is an apocalyptic number.

It is an amenable number.

16566535032104 is a deficient number, since it is larger than the sum of its proper divisors (16322909517196).

16566535032104 is a wasteful number, since it uses less digits than its factorization.

16566535032104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121812757612 (or 121812757608 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 47.

Adding to 16566535032104 its reverse (40123053566561), we get a palindrome (56689588598665).

The spelling of 16566535032104 in words is "sixteen trillion, five hundred sixty-six billion, five hundred thirty-five million, thirty-two thousand, one hundred four".