138298722720 has 192 divisors, whose sum is σ = 450090224640. Its totient is φ = 35658547200.

The previous prime is 138298722707. The next prime is 138298722743. The reversal of 138298722720 is 27227892831.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20248266 + ... + 20255094.

It is an arithmetic number, because the mean of its divisors is an integer number (2344219920).

Almost surely, 2^138298722720 is an apocalyptic number.

138298722720 is a gapful number since it is divisible by the number (10) 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 138298722720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225045112320).

138298722720 is an abundant number, since it is smaller than the sum of its proper divisors (311791501920).

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

138298722720 is a wasteful number, since it uses less digits than its factorization.

138298722720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8239 (or 8231 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 138298722720 in words is "one hundred thirty-eight billion, two hundred ninety-eight million, seven hundred twenty-two thousand, seven hundred twenty".