138826340046239 has 2 divisors, whose sum is σ = 138826340046240. Its totient is φ = 138826340046238.

The previous prime is 138826340046193. The next prime is 138826340046257. The reversal of 138826340046239 is 932640043628831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138826340046239 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138826340046259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69413170023119 + 69413170023120.

It is an arithmetic number, because the mean of its divisors is an integer number (69413170023120).

Almost surely, 2^{138826340046239} is an apocalyptic number.

138826340046239 is a deficient number, since it is larger than the sum of its proper divisors (1).

138826340046239 is an equidigital number, since it uses as much as digits as its factorization.

138826340046239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35831808, while the sum is 59.

The spelling of 138826340046239 in words is "one hundred thirty-eight trillion, eight hundred twenty-six billion, three hundred forty million, forty-six thousand, two hundred thirty-nine".