12320400404044 has 24 divisors (see below), whose sum is σ = 22847110004880. Its totient is φ = 5793230332416.

The previous prime is 12320400404021. The next prime is 12320400404057. The reversal of 12320400404044 is 44040400402321.

It is a super-2 number, since 2×12320400404044² (a number of 27 digits) contains 22 as substring.

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, 71869257 + ... + 72040480.

It is an arithmetic number, because the mean of its divisors is an integer number (951962916870).

Almost surely, 2^{12320400404044} is an apocalyptic number.

It is an amenable number.

12320400404044 is a deficient number, since it is larger than the sum of its proper divisors (10526709600836).

12320400404044 is a wasteful number, since it uses less digits than its factorization.

12320400404044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143911017 (or 143911015 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 12320400404044 its reverse (44040400402321), we get a palindrome (56360800806365).

The spelling of 12320400404044 in words is "twelve trillion, three hundred twenty billion, four hundred million, four hundred four thousand, forty-four".