1240444453013 has 4 divisors (see below), whose sum is σ = 1263849065388. Its totient is φ = 1217039840640.

The previous prime is 1240444452901. The next prime is 1240444453049. The reversal of 1240444453013 is 3103544440421.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 469599084529 + 770845368484 = 685273^2 + 877978^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240444453013 - 2⁸ = 1240444452757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240444453063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11702306108 + ... + 11702306213.

It is an arithmetic number, because the mean of its divisors is an integer number (315962266347).

Almost surely, 2^{1240444453013} is an apocalyptic number.

It is an amenable number.

1240444453013 is a deficient number, since it is larger than the sum of its proper divisors (23404612375).

1240444453013 is an equidigital number, since it uses as much as digits as its factorization.

1240444453013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23404612374.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 1240444453013 its reverse (3103544440421), we get a palindrome (4343988893434).

The spelling of 1240444453013 in words is "one trillion, two hundred forty billion, four hundred forty-four million, four hundred fifty-three thousand, thirteen".