203734135720 has 16 divisors (see below), whose sum is σ = 458401805460. Its totient is φ = 81493654272.

The previous prime is 203734135681. The next prime is 203734135721. The reversal of 203734135720 is 27531437302.

203734135720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 202192316964 + 1541818756 = 449658^2 + 39266^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203734135720.

It is not an unprimeable number, because it can be changed into a prime (203734135721) 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 3 ways as a sum of consecutive naturals, for example, 2546676657 + ... + 2546676736.

Almost surely, 2^203734135720 is an apocalyptic number.

203734135720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203734135720 is an abundant number, since it is smaller than the sum of its proper divisors (254667669740).

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

203734135720 is a wasteful number, since it uses less digits than its factorization.

203734135720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093353404 (or 5093353400 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 37.

The spelling of 203734135720 in words is "two hundred three billion, seven hundred thirty-four million, one hundred thirty-five thousand, seven hundred twenty".