400511540452 has 24 divisors (see below), whose sum is σ = 718753150080. Its totient is φ = 195216880320.

The previous prime is 400511540449. The next prime is 400511540467. The reversal of 400511540452 is 254045115004.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7897488 + ... + 7948039.

It is an arithmetic number, because the mean of its divisors is an integer number (29948047920).

Almost surely, 2^400511540452 is an apocalyptic number.

It is an amenable number.

400511540452 is a deficient number, since it is larger than the sum of its proper divisors (318241609628).

400511540452 is a wasteful number, since it uses less digits than its factorization.

400511540452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15845691 (or 15845689 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 400511540452 its reverse (254045115004), we get a palindrome (654556655456).

The spelling of 400511540452 in words is "four hundred billion, five hundred eleven million, five hundred forty thousand, four hundred fifty-two".