40000843872 has 192 divisors, whose sum is σ = 134762745600. Its totient is φ = 11408394240.

The previous prime is 40000843747. The next prime is 40000843873. The reversal of 40000843872 is 27834800004.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000843873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37779 + ... + 285357.

It is an arithmetic number, because the mean of its divisors is an integer number (701889300).

Almost surely, 2^40000843872 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 40000843872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67381372800).

40000843872 is an abundant number, since it is smaller than the sum of its proper divisors (94761901728).

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

40000843872 is a wasteful number, since it uses less digits than its factorization.

40000843872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247626 (or 247612 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 40000843872 in words is "forty billion, eight hundred forty-three thousand, eight hundred seventy-two".