138863683745273 has 2 divisors, whose sum is σ = 138863683745274. Its totient is φ = 138863683745272.

The previous prime is 138863683745263. The next prime is 138863683745287. The reversal of 138863683745273 is 372547386368831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138029296496569 + 834387248704 = 11748587^2 + 913448^2 .

It is a cyclic number.

It is not a de Polignac number, because 138863683745273 - 2⁴ = 138863683745257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138863683745273.

It is not a weakly prime, because it can be changed into another prime (138863683745263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69431841872636 + 69431841872637.

It is an arithmetic number, because the mean of its divisors is an integer number (69431841872637).

Almost surely, 2^{138863683745273} is an apocalyptic number.

It is an amenable number.

138863683745273 is a deficient number, since it is larger than the sum of its proper divisors (1).

138863683745273 is an equidigital number, since it uses as much as digits as its factorization.

138863683745273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2926264320, while the sum is 74.

The spelling of 138863683745273 in words is "one hundred thirty-eight trillion, eight hundred sixty-three billion, six hundred eighty-three million, seven hundred forty-five thousand, two hundred seventy-three".