99388616709 has 4 divisors (see below), whose sum is σ = 132518155616. Its totient is φ = 66259077804.

The previous prime is 99388616671. The next prime is 99388616711. The reversal of 99388616709 is 90761688399.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 99388616709 - 2¹⁵ = 99388583941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99388616709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99388616309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16564769449 + ... + 16564769454.

It is an arithmetic number, because the mean of its divisors is an integer number (33129538904).

Almost surely, 2^99388616709 is an apocalyptic number.

It is an amenable number.

99388616709 is a deficient number, since it is larger than the sum of its proper divisors (33129538907).

99388616709 is a wasteful number, since it uses less digits than its factorization.

99388616709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33129538906.

The product of its (nonzero) digits is 35271936, while the sum is 66.

The spelling of 99388616709 in words is "ninety-nine billion, three hundred eighty-eight million, six hundred sixteen thousand, seven hundred nine".