203452616340 has 144 divisors (see below), whose sum is σ = 644742942480. Its totient is φ = 51864422400.

The previous prime is 203452616329. The next prime is 203452616363. The reversal of 203452616340 is 43616254302.

203452616340 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 5 + 2 + 616 + 34 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 65095399044 + 138357217296 = 255138^2 + 371964^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 203452616295 and 203452616304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 334272 + ... + 720168.

It is an arithmetic number, because the mean of its divisors is an integer number (4477381545).

Almost surely, 2^203452616340 is an apocalyptic number.

203452616340 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 203452616340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322371471240).

203452616340 is an abundant number, since it is smaller than the sum of its proper divisors (441290326140).

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

203452616340 is a wasteful number, since it uses less digits than its factorization.

203452616340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386042 (or 386037 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 203452616340 in words is "two hundred three billion, four hundred fifty-two million, six hundred sixteen thousand, three hundred forty".