203402222440 has 16 divisors (see below), whose sum is σ = 457655000580. Its totient is φ = 81360888960.

The previous prime is 203402222411. The next prime is 203402222453. The reversal of 203402222440 is 44222204302.

It can be written as a sum of positive squares in 2 ways, for example, as 171162583524 + 32239638916 = 413718^2 + 179554^2 .

It is a super-3 number, since 3×203402222440³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542527741 + ... + 2542527820.

Almost surely, 2^203402222440 is an apocalyptic number.

203402222440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203402222440 is an abundant number, since it is smaller than the sum of its proper divisors (254252778140).

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

203402222440 is a wasteful number, since it uses less digits than its factorization.

203402222440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085055572 (or 5085055568 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 203402222440 its reverse (44222204302), we get a palindrome (247624426742).

The spelling of 203402222440 in words is "two hundred three billion, four hundred two million, two hundred twenty-two thousand, four hundred forty".