138364938220 has 12 divisors (see below), whose sum is σ = 290566370304. Its totient is φ = 55345975280.

The previous prime is 138364938197. The next prime is 138364938233. The reversal of 138364938220 is 22839463831.

138364938220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138364938220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3459123436 + ... + 3459123475.

It is an arithmetic number, because the mean of its divisors is an integer number (24213864192).

Almost surely, 2^138364938220 is an apocalyptic number.

138364938220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138364938220 is an abundant number, since it is smaller than the sum of its proper divisors (152201432084).

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

138364938220 is a wasteful number, since it uses less digits than its factorization.

138364938220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6918246920 (or 6918246918 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 138364938220 in words is "one hundred thirty-eight billion, three hundred sixty-four million, nine hundred thirty-eight thousand, two hundred twenty".