16555267320523 has 2 divisors, whose sum is σ = 16555267320524. Its totient is φ = 16555267320522.

The previous prime is 16555267320479. The next prime is 16555267320611. The reversal of 16555267320523 is 32502376255561.

It is a weak prime.

It is an emirp because it is prime and its reverse (32502376255561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16555267320523 - 2³⁷ = 16417828367051 is a prime.

It is not a weakly prime, because it can be changed into another prime (16555267323523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8277633660261 + 8277633660262.

It is an arithmetic number, because the mean of its divisors is an integer number (8277633660262).

Almost surely, 2^{16555267320523} is an apocalyptic number.

16555267320523 is a deficient number, since it is larger than the sum of its proper divisors (1).

16555267320523 is an equidigital number, since it uses as much as digits as its factorization.

16555267320523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340000, while the sum is 52.

The spelling of 16555267320523 in words is "sixteen trillion, five hundred fifty-five billion, two hundred sixty-seven million, three hundred twenty thousand, five hundred twenty-three".