1244321278249 has 12 divisors (see below), whose sum is σ = 1447564339200. Its totient is φ = 1066495836168.

The previous prime is 1244321278247. The next prime is 1244321278261. The reversal of 1244321278249 is 9428721234421.

It is not a de Polignac number, because 1244321278249 - 2¹ = 1244321278247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (1244321278241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40792 + ... + 1578070.

It is an arithmetic number, because the mean of its divisors is an integer number (120630361600).

Almost surely, 2^{1244321278249} is an apocalyptic number.

It is an amenable number.

1244321278249 is a deficient number, since it is larger than the sum of its proper divisors (203243060951).

1244321278249 is a wasteful number, since it uses less digits than its factorization.

1244321278249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553812 (or 1553805 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The spelling of 1244321278249 in words is "one trillion, two hundred forty-four billion, three hundred twenty-one million, two hundred seventy-eight thousand, two hundred forty-nine".