13203775550 has 24 divisors (see below), whose sum is σ = 28067455056. Its totient is φ = 4527008640.

The previous prime is 13203775537. The next prime is 13203775553. The reversal of 13203775550 is 5557730231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203775553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18862187 + ... + 18862886.

It is an arithmetic number, because the mean of its divisors is an integer number (1169477294).

Almost surely, 2^13203775550 is an apocalyptic number.

13203775550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13203775550 is an abundant number, since it is smaller than the sum of its proper divisors (14863679506).

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

13203775550 is a wasteful number, since it uses less digits than its factorization.

13203775550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37725092 (or 37725087 counting only the distinct ones).

The product of its (nonzero) digits is 110250, while the sum is 38.

The spelling of 13203775550 in words is "thirteen billion, two hundred three million, seven hundred seventy-five thousand, five hundred fifty".