138701670047 has 2 divisors, whose sum is σ = 138701670048. Its totient is φ = 138701670046.

The previous prime is 138701670031. The next prime is 138701670053. The reversal of 138701670047 is 740076107831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138701670047 - 2⁴ = 138701670031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138701670847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69350835023 + 69350835024.

It is an arithmetic number, because the mean of its divisors is an integer number (69350835024).

Almost surely, 2^138701670047 is an apocalyptic number.

138701670047 is a deficient number, since it is larger than the sum of its proper divisors (1).

138701670047 is an equidigital number, since it uses as much as digits as its factorization.

138701670047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 44.

Adding to 138701670047 its reverse (740076107831), we get a palindrome (878777777878).

The spelling of 138701670047 in words is "one hundred thirty-eight billion, seven hundred one million, six hundred seventy thousand, forty-seven".