138848417552517 has 8 divisors (see below), whose sum is σ = 185131291853280. Its totient is φ = 92565577476720.

The previous prime is 138848417552447. The next prime is 138848417552521. The reversal of 138848417552517 is 715255714848831.

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

It is a de Polignac number, because none of the positive numbers 2^k-138848417552517 is a prime.

It is a super-2 number, since 2×138848417552517² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138848417552567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3228859 + ... + 16974167.

It is an arithmetic number, because the mean of its divisors is an integer number (23141411481660).

Almost surely, 2^{138848417552517} is an apocalyptic number.

It is an amenable number.

138848417552517 is a deficient number, since it is larger than the sum of its proper divisors (46282874300763).

138848417552517 is a wasteful number, since it uses less digits than its factorization.

138848417552517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17112483.

The product of its digits is 301056000, while the sum is 69.

The spelling of 138848417552517 in words is "one hundred thirty-eight trillion, eight hundred forty-eight billion, four hundred seventeen million, five hundred fifty-two thousand, five hundred seventeen".