12400001044 has 12 divisors (see below), whose sum is σ = 21997262644. Its totient is φ = 6115068864.

The previous prime is 12400001041. The next prime is 12400001083. The reversal of 12400001044 is 44010000421.

It can be written as a sum of positive squares in 2 ways, for example, as 9759068944 + 2640932100 = 98788^2 + 51390^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400001041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21232587 + ... + 21233170.

Almost surely, 2^12400001044 is an apocalyptic number.

It is an amenable number.

12400001044 is a deficient number, since it is larger than the sum of its proper divisors (9597261600).

12400001044 is a wasteful number, since it uses less digits than its factorization.

12400001044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42465834 (or 42465832 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12400001044 its reverse (44010000421), we get a palindrome (56410001465).

The spelling of 12400001044 in words is "twelve billion, four hundred million, one thousand, forty-four".