138567084517 has 8 divisors (see below), whose sum is σ = 139548591000. Its totient is φ = 137586265344.

The previous prime is 138567084511. The next prime is 138567084521. The reversal of 138567084517 is 715480765831.

138567084517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 372246²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3414532356 + 135152552161 = 58434^2 + 367631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138567084517 is a prime.

It is a super-2 number, since 2×138567084517² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138567084511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236233 + ... + 577009.

It is an arithmetic number, because the mean of its divisors is an integer number (17443573875).

Almost surely, 2^138567084517 is an apocalyptic number.

It is an amenable number.

138567084517 is a deficient number, since it is larger than the sum of its proper divisors (981506483).

138567084517 is a wasteful number, since it uses less digits than its factorization.

138567084517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343655.

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 138567084517 in words is "one hundred thirty-eight billion, five hundred sixty-seven million, eighty-four thousand, five hundred seventeen".