985415916671 has 2 divisors, whose sum is σ = 985415916672. Its totient is φ = 985415916670.

The previous prime is 985415916643. The next prime is 985415916689. The reversal of 985415916671 is 176619514589.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 985415916671 - 2³⁰ = 984342174847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985415916271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492707958335 + 492707958336.

It is an arithmetic number, because the mean of its divisors is an integer number (492707958336).

Almost surely, 2^985415916671 is an apocalyptic number.

985415916671 is a deficient number, since it is larger than the sum of its proper divisors (1).

985415916671 is an equidigital number, since it uses as much as digits as its factorization.

985415916671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16329600, while the sum is 62.

The spelling of 985415916671 in words is "nine hundred eighty-five billion, four hundred fifteen million, nine hundred sixteen thousand, six hundred seventy-one".