12811833407808 has 84 divisors (see below), whose sum is σ = 36736622366080. Its totient is φ = 4269004528896.

The previous prime is 12811833407767. The next prime is 12811833407827. The reversal of 12811833407808 is 80870433811821.

12811833407808 is a `hidden beast` number, since 1 + 2 + 81 + 1 + 83 + 3 + 407 + 80 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2650960 + ... + 5714127.

Almost surely, 2^{12811833407808} is an apocalyptic number.

12811833407808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12811833407808 is an abundant number, since it is smaller than the sum of its proper divisors (23924788958272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12811833407808 is a wasteful number, since it uses less digits than its factorization.

12811833407808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8367764 (or 8367751 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 12811833407808 in words is "twelve trillion, eight hundred eleven billion, eight hundred thirty-three million, four hundred seven thousand, eight hundred eight".