138147989479063 has 2 divisors, whose sum is σ = 138147989479064. Its totient is φ = 138147989479062.

The previous prime is 138147989479021. The next prime is 138147989479069. The reversal of 138147989479063 is 360974989741831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138147989479063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138147989479069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69073994739531 + 69073994739532.

It is an arithmetic number, because the mean of its divisors is an integer number (69073994739532).

Almost surely, 2^{138147989479063} is an apocalyptic number.

138147989479063 is a deficient number, since it is larger than the sum of its proper divisors (1).

138147989479063 is an equidigital number, since it uses as much as digits as its factorization.

138147989479063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975228416, while the sum is 79.

The spelling of 138147989479063 in words is "one hundred thirty-eight trillion, one hundred forty-seven billion, nine hundred eighty-nine million, four hundred seventy-nine thousand, sixty-three".