999999999999803 has 8 divisors (see below), whose sum is σ = 1090915639292736. Its totient is φ = 909085452104200.

The previous prime is 999999999999659. The next prime is 999999999999809. The reversal of 999999999999803 is 308999999999999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999999999999803 - 2²⁶ = 999999932890939 is a prime.

It is a super-9 number, since 9×999999999999803⁹ (a number of 136 digits) contains 999999999 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999999999999809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270932933 + ... + 274599078.

It is an arithmetic number, because the mean of its divisors is an integer number (136364454911592).

Almost surely, 2^{999999999999803} is an apocalyptic number.

999999999999803 is a deficient number, since it is larger than the sum of its proper divisors (90915639292933).

999999999999803 is a wasteful number, since it uses less digits than its factorization.

999999999999803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545698665.

The product of its (nonzero) digits is 6778308875544, while the sum is 119.

The spelling of 999999999999803 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred three".