400073112812 has 24 divisors (see below), whose sum is σ = 701186168592. Its totient is φ = 199734353600.

The previous prime is 400073112811. The next prime is 400073112827. The reversal of 400073112812 is 218211370004.

It is not an unprimeable number, because it can be changed into a prime (400073112811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12532223 + ... + 12564105.

It is an arithmetic number, because the mean of its divisors is an integer number (29216090358).

Almost surely, 2^400073112812 is an apocalyptic number.

It is an amenable number.

400073112812 is a deficient number, since it is larger than the sum of its proper divisors (301113055780).

400073112812 is a wasteful number, since it uses less digits than its factorization.

400073112812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36529 (or 36527 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 400073112812 its reverse (218211370004), we get a palindrome (618284482816).

The spelling of 400073112812 in words is "four hundred billion, seventy-three million, one hundred twelve thousand, eight hundred twelve".