22140218546640 has 320 divisors, whose sum is σ = 80558877473280. Its totient is φ = 5647359066624.

The previous prime is 22140218546599. The next prime is 22140218546657. The reversal of 22140218546640 is 4664581204122.

22140218546640 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 0 + 2 + 185 + 466 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1273114 + ... + 6775046.

It is an arithmetic number, because the mean of its divisors is an integer number (251746492104).

Almost surely, 2^{22140218546640} is an apocalyptic number.

22140218546640 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 22140218546640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40279438736640).

22140218546640 is an abundant number, since it is smaller than the sum of its proper divisors (58418658926640).

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

22140218546640 is an equidigital number, since it uses as much as digits as its factorization.

22140218546640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5501990 (or 5501966 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 22140218546640 in words is "twenty-two trillion, one hundred forty billion, two hundred eighteen million, five hundred forty-six thousand, six hundred forty".