138629026236959 has 4 divisors (see below), whose sum is σ = 138756092256600. Its totient is φ = 138501960217320.

The previous prime is 138629026236947. The next prime is 138629026237049. The reversal of 138629026236959 is 959632620926831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138629026236959 - 2²⁰ = 138629025188383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138629026236892 and 138629026236901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138629026236919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63533008184 + ... + 63533010365.

It is an arithmetic number, because the mean of its divisors is an integer number (34689023064150).

Almost surely, 2^{138629026236959} is an apocalyptic number.

138629026236959 is a deficient number, since it is larger than the sum of its proper divisors (127066019641).

138629026236959 is a wasteful number, since it uses less digits than its factorization.

138629026236959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127066019640.

The product of its (nonzero) digits is 453496320, while the sum is 71.

The spelling of 138629026236959 in words is "one hundred thirty-eight trillion, six hundred twenty-nine billion, twenty-six million, two hundred thirty-six thousand, nine hundred fifty-nine".