12405331144 has 32 divisors (see below), whose sum is σ = 23431275000. Its totient is φ = 6157046272.

The previous prime is 12405331109. The next prime is 12405331151. The reversal of 12405331144 is 44113350421.

It can be written as a sum of positive squares in 4 ways, for example, as 1243408644 + 11161922500 = 35262^2 + 105650^2 .

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, 2850282 + ... + 2854630.

Almost surely, 2^12405331144 is an apocalyptic number.

It is an amenable number.

12405331144 is a deficient number, since it is larger than the sum of its proper divisors (11025943856).

12405331144 is a wasteful number, since it uses less digits than its factorization.

12405331144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897 (or 6893 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 12405331144 its reverse (44113350421), we get a palindrome (56518681565).

The spelling of 12405331144 in words is "twelve billion, four hundred five million, three hundred thirty-one thousand, one hundred forty-four".