20355101622044 has 12 divisors (see below), whose sum is σ = 40710203244144. Its totient is φ = 8723614980864.

The previous prime is 20355101622041. The next prime is 20355101622103. The reversal of 20355101622044 is 44022610155302.

20355101622044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20355101621995 and 20355101622013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355101622041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363483957509 + ... + 363483957564.

It is an arithmetic number, because the mean of its divisors is an integer number (3392516937012).

Almost surely, 2^{20355101622044} is an apocalyptic number.

It is an amenable number.

20355101622044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20355101622044 is a wasteful number, since it uses less digits than its factorization.

20355101622044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726967915084 (or 726967915082 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 20355101622044 its reverse (44022610155302), we get a palindrome (64377711777346).

The spelling of 20355101622044 in words is "twenty trillion, three hundred fifty-five billion, one hundred one million, six hundred twenty-two thousand, forty-four".