138068787582829 has 2 divisors, whose sum is σ = 138068787582830. Its totient is φ = 138068787582828.

The previous prime is 138068787582821. The next prime is 138068787582839. The reversal of 138068787582829 is 928285787860831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130521256668100 + 7547530914729 = 11424590^2 + 2747277^2 .

It is a cyclic number.

It is not a de Polignac number, because 138068787582829 - 2³ = 138068787582821 is a prime.

It is a super-3 number, since 3×138068787582829³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138068787582821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69034393791414 + 69034393791415.

It is an arithmetic number, because the mean of its divisors is an integer number (69034393791415).

Almost surely, 2^{138068787582829} is an apocalyptic number.

It is an amenable number.

138068787582829 is a deficient number, since it is larger than the sum of its proper divisors (1).

138068787582829 is an equidigital number, since it uses as much as digits as its factorization.

138068787582829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5202247680, while the sum is 82.

The spelling of 138068787582829 in words is "one hundred thirty-eight trillion, sixty-eight billion, seven hundred eighty-seven million, five hundred eighty-two thousand, eight hundred twenty-nine".