9999936369187 has 2 divisors, whose sum is σ = 9999936369188. Its totient is φ = 9999936369186.

The previous prime is 9999936369119. The next prime is 9999936369223. The reversal of 9999936369187 is 7819636399999.

It is a strong prime.

It is an emirp because it is prime and its reverse (7819636399999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9999936369187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9999936369098 and 9999936369107.

It is not a weakly prime, because it can be changed into another prime (9999936369107) 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, 4999968184593 + 4999968184594.

It is an arithmetic number, because the mean of its divisors is an integer number (4999968184594).

Almost surely, 2^{9999936369187} is an apocalyptic number.

9999936369187 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999936369187 is an equidigital number, since it uses as much as digits as its factorization.

9999936369187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9642465504, while the sum is 88.

The spelling of 9999936369187 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred thirty-six million, three hundred sixty-nine thousand, one hundred eighty-seven".