4091809236912 has 320 divisors, whose sum is σ = 12218637004800. Its totient is φ = 1309647605760.

The previous prime is 4091809236899. The next prime is 4091809236917. The reversal of 4091809236912 is 2196329081904.

4091809236912 is a `hidden beast` number, since 4 + 0 + 9 + 180 + 92 + 369 + 12 = 666.

4091809236912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (4091809236917) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2748024264 + ... + 2748025752.

It is an arithmetic number, because the mean of its divisors is an integer number (38183240640).

Almost surely, 2^{4091809236912} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4091809236912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6109318502400).

4091809236912 is an abundant number, since it is smaller than the sum of its proper divisors (8126827767888).

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

4091809236912 is a wasteful number, since it uses less digits than its factorization.

4091809236912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001 (or 2989 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 4091809236912 in words is "four trillion, ninety-one billion, eight hundred nine million, two hundred thirty-six thousand, nine hundred twelve".