9999485251187 has 2 divisors, whose sum is σ = 9999485251188. Its totient is φ = 9999485251186.

The previous prime is 9999485251159. The next prime is 9999485251193. The reversal of 9999485251187 is 7811525849999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9999485251187 - 2²⁰ = 9999484202611 is a prime.

It is not a weakly prime, because it can be changed into another prime (9999485251127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999742625593 + 4999742625594.

It is an arithmetic number, because the mean of its divisors is an integer number (4999742625594).

Almost surely, 2^{9999485251187} is an apocalyptic number.

9999485251187 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999485251187 is an equidigital number, since it uses as much as digits as its factorization.

9999485251187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 587865600, while the sum is 77.

The spelling of 9999485251187 in words is "nine trillion, nine hundred ninety-nine billion, four hundred eighty-five million, two hundred fifty-one thousand, one hundred eighty-seven".