13805997803 has 8 divisors (see below), whose sum is σ = 14871529008. Its totient is φ = 12740971104.

The previous prime is 13805997791. The next prime is 13805997841. The reversal of 13805997803 is 30879950831.

It is a happy number.

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 13805997803 - 2⁸ = 13805997547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13805997853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68300 + ... + 179657.

It is an arithmetic number, because the mean of its divisors is an integer number (1858941126).

Almost surely, 2^13805997803 is an apocalyptic number.

13805997803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13805997803 is a deficient number, since it is larger than the sum of its proper divisors (1065531205).

13805997803 is a wasteful number, since it uses less digits than its factorization.

13805997803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252253.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 13805997803 in words is "thirteen billion, eight hundred five million, nine hundred ninety-seven thousand, eight hundred three".