138277373189 has 2 divisors, whose sum is σ = 138277373190. Its totient is φ = 138277373188.

The previous prime is 138277373167. The next prime is 138277373191. The reversal of 138277373189 is 981373772831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111255602500 + 27021770689 = 333550^2 + 164383^2 .

It is a cyclic number.

It is not a de Polignac number, because 138277373189 - 2¹⁶ = 138277307653 is a prime.

It is a Sophie Germain prime.

Together with 138277373191, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138277373389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69138686594 + 69138686595.

It is an arithmetic number, because the mean of its divisors is an integer number (69138686595).

Almost surely, 2^138277373189 is an apocalyptic number.

It is an amenable number.

138277373189 is a deficient number, since it is larger than the sum of its proper divisors (1).

138277373189 is an equidigital number, since it uses as much as digits as its factorization.

138277373189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 59.

The spelling of 138277373189 in words is "one hundred thirty-eight billion, two hundred seventy-seven million, three hundred seventy-three thousand, one hundred eighty-nine".