1244043554605 has 4 divisors (see below), whose sum is σ = 1492852265532. Its totient is φ = 995234843680.

The previous prime is 1244043554597. The next prime is 1244043554641. The reversal of 1244043554605 is 5064553404421.

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 377129863881 + 866913690724 = 614109^2 + 931082^2 .

It is not a de Polignac number, because 1244043554605 - 2³ = 1244043554597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124404355456 + ... + 124404355465.

It is an arithmetic number, because the mean of its divisors is an integer number (373213066383).

Almost surely, 2^{1244043554605} is an apocalyptic number.

It is an amenable number.

1244043554605 is a deficient number, since it is larger than the sum of its proper divisors (248808710927).

1244043554605 is an equidigital number, since it uses as much as digits as its factorization.

1244043554605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248808710926.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 1244043554605 in words is "one trillion, two hundred forty-four billion, forty-three million, five hundred fifty-four thousand, six hundred five".