138054088817 has 2 divisors, whose sum is σ = 138054088818. Its totient is φ = 138054088816.

The previous prime is 138054088789. The next prime is 138054088829. The reversal of 138054088817 is 718880450831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100600614976 + 37453473841 = 317176^2 + 193529^2 .

It is a cyclic number.

It is not a de Polignac number, because 138054088817 - 2⁸ = 138054088561 is a prime.

It is not a weakly prime, because it can be changed into another prime (138054088517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69027044408 + 69027044409.

It is an arithmetic number, because the mean of its divisors is an integer number (69027044409).

Almost surely, 2^138054088817 is an apocalyptic number.

It is an amenable number.

138054088817 is a deficient number, since it is larger than the sum of its proper divisors (1).

138054088817 is an equidigital number, since it uses as much as digits as its factorization.

138054088817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1720320, while the sum is 53.

The spelling of 138054088817 in words is "one hundred thirty-eight billion, fifty-four million, eighty-eight thousand, eight hundred seventeen".