138282392064 has 80 divisors (see below), whose sum is σ = 368875140480. Its totient is φ = 46033797120.

The previous prime is 138282391997. The next prime is 138282392089. The reversal of 138282392064 is 460293282831.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122649 + ... + 1239719.

It is an arithmetic number, because the mean of its divisors is an integer number (4610939256).

Almost surely, 2^138282392064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138282392064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184437570240).

138282392064 is an abundant number, since it is smaller than the sum of its proper divisors (230592748416).

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

138282392064 is an equidigital number, since it uses as much as digits as its factorization.

138282392064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117861 (or 117845 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 138282392064 in words is "one hundred thirty-eight billion, two hundred eighty-two million, three hundred ninety-two thousand, sixty-four".