22020235522640 has 80 divisors (see below), whose sum is σ = 54210865885200. Its totient is φ = 8289630412800.

The previous prime is 22020235522609. The next prime is 22020235522781. The reversal of 22020235522640 is 4622553202022.

22020235522640 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 323979532864 + 21696255989776 = 569192^2 + 4657924^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 22020235522640.

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 15 ways as a sum of consecutive naturals, for example, 34089386 + ... + 34729334.

It is an arithmetic number, because the mean of its divisors is an integer number (677635823565).

Almost surely, 2^{22020235522640} is an apocalyptic number.

22020235522640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020235522640 is an abundant number, since it is smaller than the sum of its proper divisors (32190630362560).

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

22020235522640 is a wasteful number, since it uses less digits than its factorization.

22020235522640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665280 (or 665274 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 22020235522640 its reverse (4622553202022), we get a palindrome (26642788724662).

The spelling of 22020235522640 in words is "twenty-two trillion, twenty billion, two hundred thirty-five million, five hundred twenty-two thousand, six hundred forty".