9999993999801 has 48 divisors (see below), whose sum is σ = 14809446639360. Its totient is φ = 5996605455360.

The previous prime is 9999993999781. The next prime is 9999993999803. The reversal of 9999993999801 is 1089993999999.

It is not a de Polignac number, because 9999993999801 - 2¹⁹ = 9999993475513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9999993999696 and 9999993999705.

It is not an unprimeable number, because it can be changed into a prime (9999993999803) 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 47 ways as a sum of consecutive naturals, for example, 4540561 + ... + 6373121.

It is an arithmetic number, because the mean of its divisors is an integer number (308530138320).

Almost surely, 2^{9999993999801} is an apocalyptic number.

It is an amenable number.

9999993999801 is a deficient number, since it is larger than the sum of its proper divisors (4809452639559).

9999993999801 is a wasteful number, since it uses less digits than its factorization.

9999993999801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832866 (or 1832853 counting only the distinct ones).

The product of its (nonzero) digits is 9298091736, while the sum is 93.

The spelling of 9999993999801 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-three million, nine hundred ninety-nine thousand, eight hundred one".