138066498852 has 96 divisors (see below), whose sum is σ = 350511017472. Its totient is φ = 42121875456.

The previous prime is 138066498851. The next prime is 138066498859. The reversal of 138066498852 is 258894660831.

It is not an unprimeable number, because it can be changed into a prime (138066498851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19190968 + ... + 19198160.

It is an arithmetic number, because the mean of its divisors is an integer number (3651156432).

Almost surely, 2^138066498852 is an apocalyptic number.

138066498852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138066498852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175255508736).

138066498852 is an abundant number, since it is smaller than the sum of its proper divisors (212444518620).

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

138066498852 is a wasteful number, since it uses less digits than its factorization.

138066498852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9797 (or 9795 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 138066498852 in words is "one hundred thirty-eight billion, sixty-six million, four hundred ninety-eight thousand, eight hundred fifty-two".