16555340761571 has 2 divisors, whose sum is σ = 16555340761572. Its totient is φ = 16555340761570.

The previous prime is 16555340761507. The next prime is 16555340761601. The reversal of 16555340761571 is 17516704355561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16555340761571 - 2⁶ = 16555340761507 is a prime.

It is not a weakly prime, because it can be changed into another prime (16555340751571) 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 as a sum of consecutive naturals, namely, 8277670380785 + 8277670380786.

It is an arithmetic number, because the mean of its divisors is an integer number (8277670380786).

Almost surely, 2^{16555340761571} is an apocalyptic number.

16555340761571 is a deficient number, since it is larger than the sum of its proper divisors (1).

16555340761571 is an equidigital number, since it uses as much as digits as its factorization.

16555340761571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230000, while the sum is 56.

The spelling of 16555340761571 in words is "sixteen trillion, five hundred fifty-five billion, three hundred forty million, seven hundred sixty-one thousand, five hundred seventy-one".