99481981667 has 2 divisors, whose sum is σ = 99481981668. Its totient is φ = 99481981666.

The previous prime is 99481981631. The next prime is 99481981681. The reversal of 99481981667 is 76618918499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99481981667 - 2⁸ = 99481981411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99481981597 and 99481981606.

It is not a weakly prime, because it can be changed into another prime (99481980667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49740990833 + 49740990834.

It is an arithmetic number, because the mean of its divisors is an integer number (49740990834).

Almost surely, 2^99481981667 is an apocalyptic number.

99481981667 is a deficient number, since it is larger than the sum of its proper divisors (1).

99481981667 is an equidigital number, since it uses as much as digits as its factorization.

99481981667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 68.

The spelling of 99481981667 in words is "ninety-nine billion, four hundred eighty-one million, nine hundred eighty-one thousand, six hundred sixty-seven".