20202320550 has 48 divisors (see below), whose sum is σ = 50179913280. Its totient is φ = 5378881440.

The previous prime is 20202320543. The next prime is 20202320561. The reversal of 20202320550 is 5502320202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8280 + ... + 201179.

It is an arithmetic number, because the mean of its divisors is an integer number (1045414860).

Almost surely, 2^20202320550 is an apocalyptic number.

20202320550 is an abundant number, since it is smaller than the sum of its proper divisors (29977592730).

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

20202320550 is a wasteful number, since it uses less digits than its factorization.

20202320550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210117 (or 210112 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

Adding to 20202320550 its reverse (5502320202), we get a palindrome (25704640752).

The spelling of 20202320550 in words is "twenty billion, two hundred two million, three hundred twenty thousand, five hundred fifty".