400532121203452 has 24 divisors (see below), whose sum is σ = 835893122512896. Its totient is φ = 164193291921648.

The previous prime is 400532121203411. The next prime is 400532121203503. The reversal of 400532121203452 is 254302121235004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310972143148 + ... + 310972144435.

It is an arithmetic number, because the mean of its divisors is an integer number (34828880104704).

Almost surely, 2^{400532121203452} is an apocalyptic number.

It is an amenable number.

400532121203452 is an abundant number, since it is smaller than the sum of its proper divisors (435361001309444).

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

400532121203452 is a wasteful number, since it uses less digits than its factorization.

400532121203452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621944287617 (or 621944287615 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 400532121203452 its reverse (254302121235004), we get a palindrome (654834242438456).

The spelling of 400532121203452 in words is "four hundred trillion, five hundred thirty-two billion, one hundred twenty-one million, two hundred three thousand, four hundred fifty-two".