99615148909 has 2 divisors, whose sum is σ = 99615148910. Its totient is φ = 99615148908.

The previous prime is 99615148859. The next prime is 99615148921. The reversal of 99615148909 is 90984151699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96753968809 + 2861180100 = 311053^2 + 53490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99615148909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99615148309) 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, 49807574454 + 49807574455.

It is an arithmetic number, because the mean of its divisors is an integer number (49807574455).

Almost surely, 2^99615148909 is an apocalyptic number.

It is an amenable number.

99615148909 is a deficient number, since it is larger than the sum of its proper divisors (1).

99615148909 is an equidigital number, since it uses as much as digits as its factorization.

99615148909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 61.

The spelling of 99615148909 in words is "ninety-nine billion, six hundred fifteen million, one hundred forty-eight thousand, nine hundred nine".