12200789550 has 48 divisors (see below), whose sum is σ = 30273352560. Its totient is φ = 3251888640.

The previous prime is 12200789539. The next prime is 12200789591. The reversal of 12200789550 is 5598700221.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12200789499 and 12200789508.

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, 290694 + ... + 330006.

It is an arithmetic number, because the mean of its divisors is an integer number (630694845).

Almost surely, 2^12200789550 is an apocalyptic number.

12200789550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12200789550 is an abundant number, since it is smaller than the sum of its proper divisors (18072563010).

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

12200789550 is a wasteful number, since it uses less digits than its factorization.

12200789550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41397 (or 41392 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 12200789550 in words is "twelve billion, two hundred million, seven hundred eighty-nine thousand, five hundred fifty".