400532502664 has 32 divisors (see below), whose sum is σ = 862640729280. Its totient is φ = 170785427904.

The previous prime is 400532502647. The next prime is 400532502679. The reversal of 400532502664 is 466205235004.

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, 18142182 + ... + 18164245.

It is an arithmetic number, because the mean of its divisors is an integer number (26957522790).

Almost surely, 2^400532502664 is an apocalyptic number.

It is an amenable number.

400532502664 is an abundant number, since it is smaller than the sum of its proper divisors (462108226616).

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

400532502664 is a wasteful number, since it uses less digits than its factorization.

400532502664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36306637 (or 36306633 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 400532502664 its reverse (466205235004), we get a palindrome (866737737668).

The spelling of 400532502664 in words is "four hundred billion, five hundred thirty-two million, five hundred two thousand, six hundred sixty-four".