400203450252 has 36 divisors (see below), whose sum is σ = 1011830166256. Its totient is φ = 133374146400.

The previous prime is 400203450209. The next prime is 400203450263. The reversal of 400203450252 is 252054302004.

It is a happy number.

400203450252 is a `hidden beast` number, since 4 + 0 + 0 + 203 + 450 + 2 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 944443 + ... + 1300914.

Almost surely, 2^400203450252 is an apocalyptic number.

It is an amenable number.

400203450252 is an abundant number, since it is smaller than the sum of its proper divisors (611626716004).

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

400203450252 is a wasteful number, since it uses less digits than its factorization.

400203450252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250318 (or 2250313 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 400203450252 its reverse (252054302004), we get a palindrome (652257752256).

The spelling of 400203450252 in words is "four hundred billion, two hundred three million, four hundred fifty thousand, two hundred fifty-two".