1040541444440 has 128 divisors (see below), whose sum is σ = 2406387916800. Its totient is φ = 404820218880.

The previous prime is 1040541444433. The next prime is 1040541444469. The reversal of 1040541444440 is 444441450401.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040541444440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71808716 + ... + 71823204.

It is an arithmetic number, because the mean of its divisors is an integer number (18799905600).

Almost surely, 2^{1040541444440} is an apocalyptic number.

1040541444440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040541444440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203193958400).

1040541444440 is an abundant number, since it is smaller than the sum of its proper divisors (1365846472360).

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

1040541444440 is a wasteful number, since it uses less digits than its factorization.

1040541444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14905 (or 14901 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 35.

Adding to 1040541444440 its reverse (444441450401), we get a palindrome (1484982894841).

The spelling of 1040541444440 in words is "one trillion, forty billion, five hundred forty-one million, four hundred forty-four thousand, four hundred forty".