138519528517 has 8 divisors (see below), whose sum is σ = 145290180096. Its totient is φ = 131908186512.

The previous prime is 138519528479. The next prime is 138519528529. The reversal of 138519528517 is 715825915831.

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

It is a cyclic number.

It is not a de Polignac number, because 138519528517 - 2¹¹ = 138519526469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138519522517) 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, 39825613 + ... + 39829090.

It is an arithmetic number, because the mean of its divisors is an integer number (18161272512).

Almost surely, 2^138519528517 is an apocalyptic number.

It is an amenable number.

138519528517 is a deficient number, since it is larger than the sum of its proper divisors (6770651579).

138519528517 is an equidigital number, since it uses as much as digits as its factorization.

138519528517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79654787.

The product of its digits is 3024000, while the sum is 55.

The spelling of 138519528517 in words is "one hundred thirty-eight billion, five hundred nineteen million, five hundred twenty-eight thousand, five hundred seventeen".