138888750137 has 2 divisors, whose sum is σ = 138888750138. Its totient is φ = 138888750136.

The previous prime is 138888750071. The next prime is 138888750173. The reversal of 138888750137 is 731057888831.

Together with next prime (138888750173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134603869456 + 4284880681 = 366884^2 + 65459^2 .

It is a cyclic number.

It is not a de Polignac number, because 138888750137 - 2¹⁰ = 138888749113 is a prime.

It is not a weakly prime, because it can be changed into another prime (138888050137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69444375068 + 69444375069.

It is an arithmetic number, because the mean of its divisors is an integer number (69444375069).

Almost surely, 2^138888750137 is an apocalyptic number.

It is an amenable number.

138888750137 is a deficient number, since it is larger than the sum of its proper divisors (1).

138888750137 is an equidigital number, since it uses as much as digits as its factorization.

138888750137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 138888750137 in words is "one hundred thirty-eight billion, eight hundred eighty-eight million, seven hundred fifty thousand, one hundred thirty-seven".