99127199617 has 2 divisors, whose sum is σ = 99127199618. Its totient is φ = 99127199616.

The previous prime is 99127199503. The next prime is 99127199663. The reversal of 99127199617 is 71699172199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89618804496 + 9508395121 = 299364^2 + 97511^2 .

It is a cyclic number.

It is not a de Polignac number, because 99127199617 - 2¹⁵ = 99127166849 is a prime.

It is not a weakly prime, because it can be changed into another prime (99127199417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49563599808 + 49563599809.

It is an arithmetic number, because the mean of its divisors is an integer number (49563599809).

Almost surely, 2^99127199617 is an apocalyptic number.

It is an amenable number.

99127199617 is a deficient number, since it is larger than the sum of its proper divisors (1).

99127199617 is an equidigital number, since it uses as much as digits as its factorization.

99127199617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3857868, while the sum is 61.

The spelling of 99127199617 in words is "ninety-nine billion, one hundred twenty-seven million, one hundred ninety-nine thousand, six hundred seventeen".