99660109306139 has 2 divisors, whose sum is σ = 99660109306140. Its totient is φ = 99660109306138.

The previous prime is 99660109306039. The next prime is 99660109306157. The reversal of 99660109306139 is 93160390106699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99660109306139 - 2⁴⁰ = 98560597678363 is a prime.

It is not a weakly prime, because it can be changed into another prime (99660109306159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49830054653069 + 49830054653070.

It is an arithmetic number, because the mean of its divisors is an integer number (49830054653070).

Almost surely, 2^{99660109306139} is an apocalyptic number.

99660109306139 is a deficient number, since it is larger than the sum of its proper divisors (1).

99660109306139 is an equidigital number, since it uses as much as digits as its factorization.

99660109306139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12754584, while the sum is 62.

The spelling of 99660109306139 in words is "ninety-nine trillion, six hundred sixty billion, one hundred nine million, three hundred six thousand, one hundred thirty-nine".