12440131064 has 16 divisors (see below), whose sum is σ = 23358530520. Its totient is φ = 6211189600.

The previous prime is 12440131063. The next prime is 12440131069. The reversal of 12440131064 is 46013104421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440131063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103534 + ... + 1114749.

Almost surely, 2^12440131064 is an apocalyptic number.

It is an amenable number.

12440131064 is a deficient number, since it is larger than the sum of its proper divisors (10918399456).

12440131064 is a wasteful number, since it uses less digits than its factorization.

12440131064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218990 (or 2218986 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 12440131064 its reverse (46013104421), we get a palindrome (58453235485).

The spelling of 12440131064 in words is "twelve billion, four hundred forty million, one hundred thirty-one thousand, sixty-four".