1040443407440 has 20 divisors (see below), whose sum is σ = 2419030922484. Its totient is φ = 416177362944.

The previous prime is 1040443407431. The next prime is 1040443407449. The reversal of 1040443407440 is 447043440401.

1040443407440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1040443407431) and next prime (1040443407449).

It can be written as a sum of positive squares in 2 ways, for example, as 757721502784 + 282721904656 = 870472^2 + 531716^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1040443407440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040443407449) 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, 6502771217 + ... + 6502771376.

Almost surely, 2^{1040443407440} is an apocalyptic number.

1040443407440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040443407440 is an abundant number, since it is smaller than the sum of its proper divisors (1378587515044).

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

1040443407440 is a wasteful number, since it uses less digits than its factorization.

1040443407440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13005542606 (or 13005542600 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 35.

Adding to 1040443407440 its reverse (447043440401), we get a palindrome (1487486847841).

The spelling of 1040443407440 in words is "one trillion, forty billion, four hundred forty-three million, four hundred seven thousand, four hundred forty".