16545122640331 has 2 divisors, whose sum is σ = 16545122640332. Its totient is φ = 16545122640330.

The previous prime is 16545122640289. The next prime is 16545122640377. The reversal of 16545122640331 is 13304622154561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16545122640331 - 2⁷ = 16545122640203 is a prime.

It is a super-2 number, since 2×16545122640331² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16545122640931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272561320165 + 8272561320166.

It is an arithmetic number, because the mean of its divisors is an integer number (8272561320166).

Almost surely, 2^{16545122640331} is an apocalyptic number.

16545122640331 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545122640331 is an equidigital number, since it uses as much as digits as its factorization.

16545122640331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 43.

Adding to 16545122640331 its reverse (13304622154561), we get a palindrome (29849744794892).

The spelling of 16545122640331 in words is "sixteen trillion, five hundred forty-five billion, one hundred twenty-two million, six hundred forty thousand, three hundred thirty-one".