138081338347 has 2 divisors, whose sum is σ = 138081338348. Its totient is φ = 138081338346.

The previous prime is 138081338341. The next prime is 138081338401. The reversal of 138081338347 is 743833180831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138081338347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138081338347.

It is not a weakly prime, because it can be changed into another prime (138081338341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69040669173 + 69040669174.

It is an arithmetic number, because the mean of its divisors is an integer number (69040669174).

Almost surely, 2^138081338347 is an apocalyptic number.

138081338347 is a deficient number, since it is larger than the sum of its proper divisors (1).

138081338347 is an equidigital number, since it uses as much as digits as its factorization.

138081338347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 138081338347 in words is "one hundred thirty-eight billion, eighty-one million, three hundred thirty-eight thousand, three hundred forty-seven".