40784657844 has 96 divisors (see below), whose sum is σ = 114558976000. Its totient is φ = 11276828640.

The previous prime is 40784657843. The next prime is 40784657861. The reversal of 40784657844 is 44875648704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40784657843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32224 + ... + 287415.

Almost surely, 2^40784657844 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 40784657844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57279488000).

40784657844 is an abundant number, since it is smaller than the sum of its proper divisors (73774318156).

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

40784657844 is a wasteful number, since it uses less digits than its factorization.

40784657844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319698 (or 319682 counting only the distinct ones).

The product of its (nonzero) digits is 24084480, while the sum is 57.

The spelling of 40784657844 in words is "forty billion, seven hundred eighty-four million, six hundred fifty-seven thousand, eight hundred forty-four".