99638836093 has 4 divisors (see below), whose sum is σ = 102852992128. Its totient is φ = 96424680060.

The previous prime is 99638836081. The next prime is 99638836103. The reversal of 99638836093 is 39063883699.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39063883699 = 27127 ⋅1440037.

It is a cyclic number.

It is not a de Polignac number, because 99638836093 - 2⁹ = 99638835581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99638836013) 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, 1607077971 + ... + 1607078032.

It is an arithmetic number, because the mean of its divisors is an integer number (25713248032).

Almost surely, 2^99638836093 is an apocalyptic number.

It is an amenable number.

99638836093 is a deficient number, since it is larger than the sum of its proper divisors (3214156035).

99638836093 is a wasteful number, since it uses less digits than its factorization.

99638836093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214156034.

The product of its (nonzero) digits is 45349632, while the sum is 64.

The spelling of 99638836093 in words is "ninety-nine billion, six hundred thirty-eight million, eight hundred thirty-six thousand, ninety-three".