203385554020 has 48 divisors (see below), whose sum is σ = 473835096000. Its totient is φ = 72704846720.

The previous prime is 203385553997. The next prime is 203385554027. The reversal of 203385554020 is 20455583302.

203385554020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (203385554027) 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 15 ways as a sum of consecutive naturals, for example, 7821595 + ... + 7847554.

It is an arithmetic number, because the mean of its divisors is an integer number (9871564500).

Almost surely, 2^203385554020 is an apocalyptic number.

203385554020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203385554020 is an abundant number, since it is smaller than the sum of its proper divisors (270449541980).

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

203385554020 is a wasteful number, since it uses less digits than its factorization.

203385554020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15669228 (or 15669226 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 203385554020 in words is "two hundred three billion, three hundred eighty-five million, five hundred fifty-four thousand, twenty".