203513852020 has 96 divisors (see below), whose sum is σ = 458128288800. Its totient is φ = 75934810112.

The previous prime is 203513851999. The next prime is 203513852021. The reversal of 203513852020 is 20258315302.

It can be written as a sum of positive squares in 16 ways, for example, as 92700763024 + 110813088996 = 304468^2 + 332886^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203513852021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11094216 + ... + 11112544.

It is an arithmetic number, because the mean of its divisors is an integer number (4772169675).

Almost surely, 2^203513852020 is an apocalyptic number.

203513852020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203513852020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229064144400).

203513852020 is an abundant number, since it is smaller than the sum of its proper divisors (254614436780).

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

203513852020 is a wasteful number, since it uses less digits than its factorization.

203513852020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18502 (or 18466 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 203513852020 in words is "two hundred three billion, five hundred thirteen million, eight hundred fifty-two thousand, twenty".