138675511129 has 2 divisors, whose sum is σ = 138675511130. Its totient is φ = 138675511128.

The previous prime is 138675511103. The next prime is 138675511157. The reversal of 138675511129 is 921115576831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79761056400 + 58914454729 = 282420^2 + 242723^2 .

It is a cyclic number.

It is not a de Polignac number, because 138675511129 - 2⁵ = 138675511097 is a prime.

It is not a weakly prime, because it can be changed into another prime (138675511159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69337755564 + 69337755565.

It is an arithmetic number, because the mean of its divisors is an integer number (69337755565).

Almost surely, 2^138675511129 is an apocalyptic number.

It is an amenable number.

138675511129 is a deficient number, since it is larger than the sum of its proper divisors (1).

138675511129 is an equidigital number, since it uses as much as digits as its factorization.

138675511129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 49.

The spelling of 138675511129 in words is "one hundred thirty-eight billion, six hundred seventy-five million, five hundred eleven thousand, one hundred twenty-nine".