20344513120550 has 48 divisors (see below), whose sum is σ = 39922331146560. Its totient is φ = 7692096615840.

The previous prime is 20344513120523. The next prime is 20344513120553. The reversal of 20344513120550 is 5502131544302.

It is a super-2 number, since 2×20344513120550² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20344513120550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344513120553) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 23749892 + ... + 24591591.

It is an arithmetic number, because the mean of its divisors is an integer number (831715232220).

Almost surely, 2^{20344513120550} is an apocalyptic number.

20344513120550 is a deficient number, since it is larger than the sum of its proper divisors (19577818026010).

20344513120550 is a wasteful number, since it uses less digits than its factorization.

20344513120550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48341957 (or 48341952 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 20344513120550 its reverse (5502131544302), we get a palindrome (25846644664852).

The spelling of 20344513120550 in words is "twenty trillion, three hundred forty-four billion, five hundred thirteen million, one hundred twenty thousand, five hundred fifty".