40320444312 has 48 divisors (see below), whose sum is σ = 114948639000. Its totient is φ = 12732771456.

The previous prime is 40320444259. The next prime is 40320444317. The reversal of 40320444312 is 21344402304.

It is a happy number.

40320444312 is a `hidden beast` number, since 4 + 0 + 3 + 204 + 443 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40320444317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14735637 + ... + 14738372.

Almost surely, 2^40320444312 is an apocalyptic number.

It is an amenable number.

40320444312 is an abundant number, since it is smaller than the sum of its proper divisors (74628194688).

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

40320444312 is a wasteful number, since it uses less digits than its factorization.

40320444312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29474040 (or 29474033 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40320444312 its reverse (21344402304), we get a palindrome (61664846616).

The spelling of 40320444312 in words is "forty billion, three hundred twenty million, four hundred forty-four thousand, three hundred twelve".