40844556816 has 120 divisors (see below), whose sum is σ = 124822859040. Its totient is φ = 11472039936.

The previous prime is 40844556811. The next prime is 40844556827. The reversal of 40844556816 is 61865544804.

It is not an unprimeable number, because it can be changed into a prime (40844556811) 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 23 ways as a sum of consecutive naturals, for example, 8401 + ... + 285936.

It is an arithmetic number, because the mean of its divisors is an integer number (1040190492).

Almost surely, 2^40844556816 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 40844556816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62411429520).

40844556816 is an abundant number, since it is smaller than the sum of its proper divisors (83978302224).

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

40844556816 is a wasteful number, since it uses less digits than its factorization.

40844556816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294421 (or 294408 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 51.

The spelling of 40844556816 in words is "forty billion, eight hundred forty-four million, five hundred fifty-six thousand, eight hundred sixteen".