16501304045 has 4 divisors (see below), whose sum is σ = 19801564860. Its totient is φ = 13201043232.

The previous prime is 16501304003. The next prime is 16501304047. The reversal of 16501304045 is 54040310561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54040310561 = 461 ⋅117224101.

It can be written as a sum of positive squares in 2 ways, for example, as 2104423876 + 14396880169 = 45874^2 + 119987^2 .

It is a cyclic number.

It is not a de Polignac number, because 16501304045 - 2⁸ = 16501303789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16501303999 and 16501304017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16501304047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1650130400 + ... + 1650130409.

It is an arithmetic number, because the mean of its divisors is an integer number (4950391215).

Almost surely, 2^16501304045 is an apocalyptic number.

It is an amenable number.

16501304045 is a deficient number, since it is larger than the sum of its proper divisors (3300260815).

16501304045 is an equidigital number, since it uses as much as digits as its factorization.

16501304045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300260814.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 16501304045 in words is "sixteen billion, five hundred one million, three hundred four thousand, forty-five".