99395631693 has 12 divisors (see below), whose sum is σ = 144604358080. Its totient is φ = 65787035976.

The previous prime is 99395631691. The next prime is 99395631719. The reversal of 99395631693 is 39613659399.

99395631693 is a `hidden beast` number, since 9 + 9 + 3 + 9 + 563 + 1 + 69 + 3 = 666.

It is not a de Polignac number, because 99395631693 - 2¹ = 99395631691 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 99395631693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99395631691) 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 in 11 ways as a sum of consecutive naturals, for example, 39725221 + ... + 39727722.

Almost surely, 2^99395631693 is an apocalyptic number.

It is an amenable number.

99395631693 is a deficient number, since it is larger than the sum of its proper divisors (45208726387).

99395631693 is a wasteful number, since it uses less digits than its factorization.

99395631693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79453088 (or 79453085 counting only the distinct ones).

The product of its digits is 31886460, while the sum is 63.

The spelling of 99395631693 in words is "ninety-nine billion, three hundred ninety-five million, six hundred thirty-one thousand, six hundred ninety-three".