1040440240011 has 4 divisors (see below), whose sum is σ = 1387253653352. Its totient is φ = 693626826672.

The previous prime is 1040440239967. The next prime is 1040440240013. The reversal of 1040440240011 is 1100420440401.

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

It is not a de Polignac number, because 1040440240011 - 2¹⁵ = 1040440207243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040440240011.

It is not an unprimeable number, because it can be changed into a prime (1040440240013) 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, 173406706666 + ... + 173406706671.

It is an arithmetic number, because the mean of its divisors is an integer number (346813413338).

Almost surely, 2^{1040440240011} is an apocalyptic number.

1040440240011 is a deficient number, since it is larger than the sum of its proper divisors (346813413341).

1040440240011 is an equidigital number, since it uses as much as digits as its factorization.

1040440240011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346813413340.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1040440240011 its reverse (1100420440401), we get a palindrome (2140860680412).

The spelling of 1040440240011 in words is "one trillion, forty billion, four hundred forty million, two hundred forty thousand, eleven".