99994903816765 has 4 divisors (see below), whose sum is σ = 119993884580124. Its totient is φ = 79995923053408.

The previous prime is 99994903816757. The next prime is 99994903816807. The reversal of 99994903816765 is 56761830949999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17956126576089 + 82038777240676 = 4237467^2 + 9057526^2 .

It is a cyclic number.

It is not a de Polignac number, because 99994903816765 - 2³ = 99994903816757 is a prime.

It is a Smith number, since the sum of its digits (85) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9999490381672 + ... + 9999490381681.

It is an arithmetic number, because the mean of its divisors is an integer number (29998471145031).

Almost surely, 2^{99994903816765} is an apocalyptic number.

It is an amenable number.

99994903816765 is a deficient number, since it is larger than the sum of its proper divisors (19998980763359).

99994903816765 is a wasteful number, since it uses less digits than its factorization.

99994903816765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19998980763358.

The product of its (nonzero) digits is 7142567040, while the sum is 85.

The spelling of 99994903816765 in words is "ninety-nine trillion, nine hundred ninety-four billion, nine hundred three million, eight hundred sixteen thousand, seven hundred sixty-five".