20243313550 has 48 divisors (see below), whose sum is σ = 39933484272. Its totient is φ = 7608384000.

The previous prime is 20243313487. The next prime is 20243313617. The reversal of 20243313550 is 5531334202.

It is a super-2 number, since 2×20243313550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 501625 + ... + 540475.

It is an arithmetic number, because the mean of its divisors is an integer number (831947589).

Almost surely, 2^20243313550 is an apocalyptic number.

20243313550 is a deficient number, since it is larger than the sum of its proper divisors (19690170722).

20243313550 is a wasteful number, since it uses less digits than its factorization.

20243313550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39493 (or 39488 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 20243313550 its reverse (5531334202), we get a palindrome (25774647752).

The spelling of 20243313550 in words is "twenty billion, two hundred forty-three million, three hundred thirteen thousand, five hundred fifty".