138782082230420 has 12 divisors (see below), whose sum is σ = 291442372683924. Its totient is φ = 55512832892160.

The previous prime is 138782082230417. The next prime is 138782082230437. The reversal of 138782082230420 is 24032280287831.

138782082230420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 70062558234244 + 68719523996176 = 8370338^2 + 8289724^2 .

It is a super-2 number, since 2×138782082230420² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3469552055741 + ... + 3469552055780.

It is an arithmetic number, because the mean of its divisors is an integer number (24286864390327).

Almost surely, 2^{138782082230420} is an apocalyptic number.

138782082230420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138782082230420 is an abundant number, since it is smaller than the sum of its proper divisors (152660290453504).

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

138782082230420 is a wasteful number, since it uses less digits than its factorization.

138782082230420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6939104111530 (or 6939104111528 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 50.

The spelling of 138782082230420 in words is "one hundred thirty-eight trillion, seven hundred eighty-two billion, eighty-two million, two hundred thirty thousand, four hundred twenty".