138667913297 has 2 divisors, whose sum is σ = 138667913298. Its totient is φ = 138667913296.

The previous prime is 138667913273. The next prime is 138667913303. The reversal of 138667913297 is 792319766831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115651685776 + 23016227521 = 340076^2 + 151711^2 .

It is an emirp because it is prime and its reverse (792319766831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138667913297 - 2¹⁶ = 138667847761 is a prime.

It is not a weakly prime, because it can be changed into another prime (138667963297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69333956648 + 69333956649.

It is an arithmetic number, because the mean of its divisors is an integer number (69333956649).

Almost surely, 2^138667913297 is an apocalyptic number.

It is an amenable number.

138667913297 is a deficient number, since it is larger than the sum of its proper divisors (1).

138667913297 is an equidigital number, since it uses as much as digits as its factorization.

138667913297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 62.

The spelling of 138667913297 in words is "one hundred thirty-eight billion, six hundred sixty-seven million, nine hundred thirteen thousand, two hundred ninety-seven".