1040339543323 has 4 divisors (see below), whose sum is σ = 1065713678568. Its totient is φ = 1014965408080.

The previous prime is 1040339543267. The next prime is 1040339543339. The reversal of 1040339543323 is 3233459330401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1040339543323 - 2⁹ = 1040339542811 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040339543423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12687067561 + ... + 12687067642.

It is an arithmetic number, because the mean of its divisors is an integer number (266428419642).

Almost surely, 2^{1040339543323} is an apocalyptic number.

1040339543323 is a deficient number, since it is larger than the sum of its proper divisors (25374135245).

1040339543323 is an equidigital number, since it uses as much as digits as its factorization.

1040339543323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25374135244.

The product of its (nonzero) digits is 349920, while the sum is 40.

The spelling of 1040339543323 in words is "one trillion, forty billion, three hundred thirty-nine million, five hundred forty-three thousand, three hundred twenty-three".