40557784220 has 96 divisors (see below), whose sum is σ = 89280479232. Its totient is φ = 15458400000.

The previous prime is 40557784219. The next prime is 40557784243. The reversal of 40557784220 is 2248775504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11958725 + ... + 11962115.

It is an arithmetic number, because the mean of its divisors is an integer number (930004992).

Almost surely, 2^40557784220 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 40557784220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44640239616).

40557784220 is an abundant number, since it is smaller than the sum of its proper divisors (48722695012).

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

40557784220 is a wasteful number, since it uses less digits than its factorization.

40557784220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 44.

The spelling of 40557784220 in words is "forty billion, five hundred fifty-seven million, seven hundred eighty-four thousand, two hundred twenty".