138825675336643 has 2 divisors, whose sum is σ = 138825675336644. Its totient is φ = 138825675336642.

The previous prime is 138825675336613. The next prime is 138825675336793. The reversal of 138825675336643 is 346633576528831.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (346633576528831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138825675336643 - 2⁵ = 138825675336611 is a prime.

It is not a weakly prime, because it can be changed into another prime (138825675336613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69412837668321 + 69412837668322.

It is an arithmetic number, because the mean of its divisors is an integer number (69412837668322).

Almost surely, 2^{138825675336643} is an apocalyptic number.

138825675336643 is a deficient number, since it is larger than the sum of its proper divisors (1).

138825675336643 is an equidigital number, since it uses as much as digits as its factorization.

138825675336643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1567641600, while the sum is 70.

The spelling of 138825675336643 in words is "one hundred thirty-eight trillion, eight hundred twenty-five billion, six hundred seventy-five million, three hundred thirty-six thousand, six hundred forty-three".