16560518900971 has 2 divisors, whose sum is σ = 16560518900972. Its totient is φ = 16560518900970.

The previous prime is 16560518900951. The next prime is 16560518900977. The reversal of 16560518900971 is 17900981506561.

It is a strong prime.

It is an emirp because it is prime and its reverse (17900981506561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16560518900971 - 2⁹ = 16560518900459 is a prime.

It is not a weakly prime, because it can be changed into another prime (16560518900977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8280259450485 + 8280259450486.

It is an arithmetic number, because the mean of its divisors is an integer number (8280259450486).

Almost surely, 2^{16560518900971} is an apocalyptic number.

16560518900971 is a deficient number, since it is larger than the sum of its proper divisors (1).

16560518900971 is an equidigital number, since it uses as much as digits as its factorization.

16560518900971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 58.

The spelling of 16560518900971 in words is "sixteen trillion, five hundred sixty billion, five hundred eighteen million, nine hundred thousand, nine hundred seventy-one".