138148683523901 has 2 divisors, whose sum is σ = 138148683523902. Its totient is φ = 138148683523900.

The previous prime is 138148683523891. The next prime is 138148683523931. The reversal of 138148683523901 is 109325386841831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99710729496676 + 38437954027225 = 9985526^2 + 6199835^2 .

It is a cyclic number.

It is not a de Polignac number, because 138148683523901 - 2²⁶ = 138148616415037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138148683523931) 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, 69074341761950 + 69074341761951.

It is an arithmetic number, because the mean of its divisors is an integer number (69074341761951).

Almost surely, 2^{138148683523901} is an apocalyptic number.

It is an amenable number.

138148683523901 is a deficient number, since it is larger than the sum of its proper divisors (1).

138148683523901 is an equidigital number, since it uses as much as digits as its factorization.

138148683523901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 138148683523901 in words is "one hundred thirty-eight trillion, one hundred forty-eight billion, six hundred eighty-three million, five hundred twenty-three thousand, nine hundred one".