999910132187 has 2 divisors, whose sum is σ = 999910132188. Its totient is φ = 999910132186.

The previous prime is 999910132163. The next prime is 999910132201. The reversal of 999910132187 is 781231019999.

It is a strong prime.

It is an emirp because it is prime and its reverse (781231019999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999910132187 - 2³² = 995615164891 is a prime.

It is not a weakly prime, because it can be changed into another prime (999910192187) 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, 499955066093 + 499955066094.

It is an arithmetic number, because the mean of its divisors is an integer number (499955066094).

Almost surely, 2^999910132187 is an apocalyptic number.

999910132187 is a deficient number, since it is larger than the sum of its proper divisors (1).

999910132187 is an equidigital number, since it uses as much as digits as its factorization.

999910132187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 59.

The spelling of 999910132187 in words is "nine hundred ninety-nine billion, nine hundred ten million, one hundred thirty-two thousand, one hundred eighty-seven".