99806847671 has 2 divisors, whose sum is σ = 99806847672. Its totient is φ = 99806847670.

The previous prime is 99806847667. The next prime is 99806847713. The reversal of 99806847671 is 17674860899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99806847671 - 2² = 99806847667 is a prime.

It is a super-2 number, since 2×99806847671² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99806847598 and 99806847607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99806847071) 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, 49903423835 + 49903423836.

It is an arithmetic number, because the mean of its divisors is an integer number (49903423836).

Almost surely, 2^99806847671 is an apocalyptic number.

99806847671 is a deficient number, since it is larger than the sum of its proper divisors (1).

99806847671 is an equidigital number, since it uses as much as digits as its factorization.

99806847671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 99806847671 in words is "ninety-nine billion, eight hundred six million, eight hundred forty-seven thousand, six hundred seventy-one".