99678195863 has 16 divisors (see below), whose sum is σ = 103382442240. Its totient is φ = 96005606400.

The previous prime is 99678195847. The next prime is 99678195887. The reversal of 99678195863 is 36859187699.

It is a cyclic number.

It is not a de Polignac number, because 99678195863 - 2⁴ = 99678195847 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 (99678195833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5664743 + ... + 5682311.

It is an arithmetic number, because the mean of its divisors is an integer number (6461402640).

Almost surely, 2^99678195863 is an apocalyptic number.

99678195863 is a deficient number, since it is larger than the sum of its proper divisors (3704246377).

99678195863 is a wasteful number, since it uses less digits than its factorization.

99678195863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18458.

The product of its digits is 176359680, while the sum is 71.

The spelling of 99678195863 in words is "ninety-nine billion, six hundred seventy-eight million, one hundred ninety-five thousand, eight hundred sixty-three".