40644058422 has 64 divisors (see below), whose sum is σ = 94570156800. Its totient is φ = 11508449280.

The previous prime is 40644058397. The next prime is 40644058489. The reversal of 40644058422 is 22485044604.

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, 25654 + ... + 286262.

It is an arithmetic number, because the mean of its divisors is an integer number (1477658700).

Almost surely, 2^40644058422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40644058422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47285078400).

40644058422 is an abundant number, since it is smaller than the sum of its proper divisors (53926098378).

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

40644058422 is a wasteful number, since it uses less digits than its factorization.

40644058422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260781.

The product of its (nonzero) digits is 245760, while the sum is 39.

The spelling of 40644058422 in words is "forty billion, six hundred forty-four million, fifty-eight thousand, four hundred twenty-two".