138875660586 has 96 divisors (see below), whose sum is σ = 341556983040. Its totient is φ = 40427517312.

The previous prime is 138875660569. The next prime is 138875660587. The reversal of 138875660586 is 685066578831.

It is a happy number.

138875660586 is a `hidden beast` number, since 13 + 8 + 8 + 7 + 5 + 6 + 605 + 8 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (138875660587) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3344991 + ... + 3386253.

It is an arithmetic number, because the mean of its divisors is an integer number (3557885240).

Almost surely, 2^138875660586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138875660586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170778491520).

138875660586 is an abundant number, since it is smaller than the sum of its proper divisors (202681322454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138875660586 is a wasteful number, since it uses less digits than its factorization.

138875660586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42060 (or 42057 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 138875660586 in words is "one hundred thirty-eight billion, eight hundred seventy-five million, six hundred sixty thousand, five hundred eighty-six".