203525521340 has 24 divisors (see below), whose sum is σ = 429618129360. Its totient is φ = 80988392448.

The previous prime is 203525521189. The next prime is 203525521343. The reversal of 203525521340 is 43125525302.

It is a junction number, because it is equal to n+sod(n) for n = 203525521297 and 203525521306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203525521343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26359550 + ... + 26367269.

It is an arithmetic number, because the mean of its divisors is an integer number (17900755390).

Almost surely, 2^203525521340 is an apocalyptic number.

203525521340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203525521340 is an abundant number, since it is smaller than the sum of its proper divisors (226092608020).

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

203525521340 is a wasteful number, since it uses less digits than its factorization.

203525521340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52727021 (or 52727019 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 203525521340 in words is "two hundred three billion, five hundred twenty-five million, five hundred twenty-one thousand, three hundred forty".