16545120539023 has 2 divisors, whose sum is σ = 16545120539024. Its totient is φ = 16545120539022.

The previous prime is 16545120539021. The next prime is 16545120539027. The reversal of 16545120539023 is 32093502154561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16545120539023 - 2¹ = 16545120539021 is a prime.

Together with 16545120539021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16545120539021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272560269511 + 8272560269512.

It is an arithmetic number, because the mean of its divisors is an integer number (8272560269512).

Almost surely, 2^{16545120539023} is an apocalyptic number.

16545120539023 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545120539023 is an equidigital number, since it uses as much as digits as its factorization.

16545120539023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 16545120539023 in words is "sixteen trillion, five hundred forty-five billion, one hundred twenty million, five hundred thirty-nine thousand, twenty-three".