22331948478840 has 640 divisors, whose sum is σ = 100780089822720. Its totient is φ = 4283450035200.

The previous prime is 22331948478817. The next prime is 22331948478859. The reversal of 22331948478840 is 4887484913322.

It is a happy number.

22331948478840 is a `hidden beast` number, since 2 + 2 + 3 + 3 + 1 + 9 + 484 + 78 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 199606 + ... + 6686085.

It is an arithmetic number, because the mean of its divisors is an integer number (157468890348).

Almost surely, 2^{22331948478840} is an apocalyptic number.

22331948478840 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 22331948478840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50390044911360).

22331948478840 is an abundant number, since it is smaller than the sum of its proper divisors (78448141343880).

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

22331948478840 is a wasteful number, since it uses less digits than its factorization.

22331948478840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6885745 (or 6885732 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 63.

The spelling of 22331948478840 in words is "twenty-two trillion, three hundred thirty-one billion, nine hundred forty-eight million, four hundred seventy-eight thousand, eight hundred forty".