99812870688127 has 2 divisors, whose sum is σ = 99812870688128. Its totient is φ = 99812870688126.

The previous prime is 99812870688103. The next prime is 99812870688163. The reversal of 99812870688127 is 72188607821899.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99812870688127 is a prime.

It is a super-3 number, since 3×99812870688127³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99812870688187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49906435344063 + 49906435344064.

It is an arithmetic number, because the mean of its divisors is an integer number (49906435344064).

Almost surely, 2^{99812870688127} is an apocalyptic number.

99812870688127 is a deficient number, since it is larger than the sum of its proper divisors (1).

99812870688127 is an equidigital number, since it uses as much as digits as its factorization.

99812870688127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 390168576, while the sum is 76.

The spelling of 99812870688127 in words is "ninety-nine trillion, eight hundred twelve billion, eight hundred seventy million, six hundred eighty-eight thousand, one hundred twenty-seven".