40043721216 has 80 divisors (see below), whose sum is σ = 106739132544. Its totient is φ = 13340381184.

The previous prime is 40043721203. The next prime is 40043721287. The reversal of 40043721216 is 61212734004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3162450 + ... + 3175086.

Almost surely, 2^40043721216 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 40043721216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53369566272).

40043721216 is an abundant number, since it is smaller than the sum of its proper divisors (66695411328).

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

40043721216 is a wasteful number, since it uses less digits than its factorization.

40043721216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14721 (or 14705 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 40043721216 in words is "forty billion, forty-three million, seven hundred twenty-one thousand, two hundred sixteen".