44022590640 has 640 divisors, whose sum is σ = 181879787520. Its totient is φ = 9569083392.

The previous prime is 44022590603. The next prime is 44022590681. The reversal of 44022590640 is 4609522044.

44022590640 is a `hidden beast` number, since 4 + 4 + 0 + 2 + 2 + 5 + 9 + 0 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 44022590595 and 44022590604.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 96329292 + ... + 96329748.

It is an arithmetic number, because the mean of its divisors is an integer number (284187168).

Almost surely, 2^44022590640 is an apocalyptic number.

44022590640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44022590640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90939893760).

44022590640 is an abundant number, since it is smaller than the sum of its proper divisors (137857196880).

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

44022590640 is a wasteful number, since it uses less digits than its factorization.

44022590640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 44022590640 in words is "forty-four billion, twenty-two million, five hundred ninety thousand, six hundred forty".