99876358009 has 2 divisors, whose sum is σ = 99876358010. Its totient is φ = 99876358008.

The previous prime is 99876357983. The next prime is 99876358051. The reversal of 99876358009 is 90085367899.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65083663225 + 34792694784 = 255115^2 + 186528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99876358009 is a prime.

It is not a weakly prime, because it can be changed into another prime (99876358609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49938179004 + 49938179005.

It is an arithmetic number, because the mean of its divisors is an integer number (49938179005).

Almost surely, 2^99876358009 is an apocalyptic number.

It is an amenable number.

99876358009 is a deficient number, since it is larger than the sum of its proper divisors (1).

99876358009 is an equidigital number, since it uses as much as digits as its factorization.

99876358009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 64.

The spelling of 99876358009 in words is "ninety-nine billion, eight hundred seventy-six million, three hundred fifty-eight thousand, nine".