203451200000000 has 234 divisors, whose sum is σ = 508569650745018. Its totient is φ = 81379840000000.

The previous prime is 203451199999979. The next prime is 203451200000101. The reversal of 203451200000000 is 2154302.

It can be written as a sum of positive squares in 9 ways, for example, as 48391723565056 + 155059476434944 = 6956416^2 + 12452288^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1599936422 + ... + 1600063578.

Almost surely, 2^{203451200000000} is an apocalyptic number.

203451200000000 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 203451200000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254284825372509).

203451200000000 is an abundant number, since it is smaller than the sum of its proper divisors (305118450745018).

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

203451200000000 is an frugal number, since it uses more digits than its factorization.

203451200000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127221 (or 127164 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

Adding to 203451200000000 its reverse (2154302), we get a palindrome (203451202154302).

The spelling of 203451200000000 in words is "two hundred three trillion, four hundred fifty-one billion, two hundred million", and thus it is an aban number.