138019230720 has 440 divisors, whose sum is σ = 565249474944. Its totient is φ = 31546589184.

The previous prime is 138019230707. The next prime is 138019230731. The reversal of 138019230720 is 27032910831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2879269 + ... + 2926811.

Almost surely, 2^138019230720 is an apocalyptic number.

138019230720 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 138019230720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282624737472).

138019230720 is an abundant number, since it is smaller than the sum of its proper divisors (427230244224).

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

138019230720 is an equidigital number, since it uses as much as digits as its factorization.

138019230720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47587 (or 47560 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 138019230720 in words is "one hundred thirty-eight billion, nineteen million, two hundred thirty thousand, seven hundred twenty".