12433431111440 has 20 divisors (see below), whose sum is σ = 28907727334284. Its totient is φ = 4973372444544.

The previous prime is 12433431111421. The next prime is 12433431111523. The reversal of 12433431111440 is 4411113433421.

It is a happy number.

12433431111440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9827673247744 + 2605757863696 = 3134912^2 + 1614236^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×12433431111440² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12433431111397 and 12433431111406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77708944367 + ... + 77708944526.

Almost surely, 2^{12433431111440} is an apocalyptic number.

12433431111440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12433431111440 is an abundant number, since it is smaller than the sum of its proper divisors (16474296222844).

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

12433431111440 is a wasteful number, since it uses less digits than its factorization.

12433431111440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155417888906 (or 155417888900 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 12433431111440 its reverse (4411113433421), we get a palindrome (16844544544861).

The spelling of 12433431111440 in words is "twelve trillion, four hundred thirty-three billion, four hundred thirty-one million, one hundred eleven thousand, four hundred forty".