22244266332640 has 144 divisors (see below), whose sum is σ = 57800703537360. Its totient is φ = 8083664230400.

The previous prime is 22244266332623. The next prime is 22244266332643. The reversal of 22244266332640 is 4623366244222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22244266332643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30048876 + ... + 30780244.

It is an arithmetic number, because the mean of its divisors is an integer number (401393774565).

Almost surely, 2^{22244266332640} is an apocalyptic number.

22244266332640 is a gapful number since it is divisible by the number (20) 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 22244266332640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28900351768680).

22244266332640 is an abundant number, since it is smaller than the sum of its proper divisors (35556437204720).

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

22244266332640 is a wasteful number, since it uses less digits than its factorization.

22244266332640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732977 (or 732958 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 46.

The spelling of 22244266332640 in words is "twenty-two trillion, two hundred forty-four billion, two hundred sixty-six million, three hundred thirty-two thousand, six hundred forty".