139744268137 has 2 divisors, whose sum is σ = 139744268138. Its totient is φ = 139744268136.

The previous prime is 139744268119. The next prime is 139744268149. The reversal of 139744268137 is 731862447931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103903720281 + 35840547856 = 322341^2 + 189316^2 .

It is an emirp because it is prime and its reverse (731862447931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139744268137 - 2¹⁹ = 139743743849 is a prime.

It is not a weakly prime, because it can be changed into another prime (139744268117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69872134068 + 69872134069.

It is an arithmetic number, because the mean of its divisors is an integer number (69872134069).

Almost surely, 2^139744268137 is an apocalyptic number.

It is an amenable number.

139744268137 is a deficient number, since it is larger than the sum of its proper divisors (1).

139744268137 is an equidigital number, since it uses as much as digits as its factorization.

139744268137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 55.

The spelling of 139744268137 in words is "one hundred thirty-nine billion, seven hundred forty-four million, two hundred sixty-eight thousand, one hundred thirty-seven".