1244134387747 has 2 divisors, whose sum is σ = 1244134387748. Its totient is φ = 1244134387746.

The previous prime is 1244134387729. The next prime is 1244134387753. The reversal of 1244134387747 is 7477834314421.

It is a strong prime.

It is an emirp because it is prime and its reverse (7477834314421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244134387747 - 2⁷ = 1244134387619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244134388747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622067193873 + 622067193874.

It is an arithmetic number, because the mean of its divisors is an integer number (622067193874).

Almost surely, 2^{1244134387747} is an apocalyptic number.

1244134387747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244134387747 is an equidigital number, since it uses as much as digits as its factorization.

1244134387747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12644352, while the sum is 55.

The spelling of 1244134387747 in words is "one trillion, two hundred forty-four billion, one hundred thirty-four million, three hundred eighty-seven thousand, seven hundred forty-seven".