400021433044032 has 56 divisors (see below), whose sum is σ = 1066004358512800. Its totient is φ = 132381193660416.

The previous prime is 400021433044021. The next prime is 400021433044133. The reversal of 400021433044032 is 230440334120004.

It is a happy 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, 7494379657 + ... + 7494433032.

It is an arithmetic number, because the mean of its divisors is an integer number (19035792116300).

Almost surely, 2^{400021433044032} is an apocalyptic number.

It is an amenable number.

400021433044032 is an abundant number, since it is smaller than the sum of its proper divisors (665982925468768).

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

400021433044032 is a wasteful number, since it uses less digits than its factorization.

400021433044032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14988812843 (or 14988812833 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 400021433044032 its reverse (230440334120004), we get a palindrome (630461767164036).

The spelling of 400021433044032 in words is "four hundred trillion, twenty-one billion, four hundred thirty-three million, forty-four thousand, thirty-two".