9986219369671 has 2 divisors, whose sum is σ = 9986219369672. Its totient is φ = 9986219369670.

The previous prime is 9986219369569. The next prime is 9986219369683. The reversal of 9986219369671 is 1769639126899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9986219369671 - 2²³ = 9986210981063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9986219369471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993109684835 + 4993109684836.

It is an arithmetic number, because the mean of its divisors is an integer number (4993109684836).

Almost surely, 2^{9986219369671} is an apocalyptic number.

9986219369671 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986219369671 is an equidigital number, since it uses as much as digits as its factorization.

9986219369671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476171136, while the sum is 76.

The spelling of 9986219369671 in words is "nine trillion, nine hundred eighty-six billion, two hundred nineteen million, three hundred sixty-nine thousand, six hundred seventy-one".