138353121273413 has 4 divisors (see below), whose sum is σ = 138413458441548. Its totient is φ = 138292784105280.

The previous prime is 138353121273379. The next prime is 138353121273427. The reversal of 138353121273413 is 314372121353831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83911773953569 + 54441347319844 = 9160337^2 + 7378438^2 .

It is a cyclic number.

It is not a de Polignac number, because 138353121273413 - 2¹⁸ = 138353121011269 is a prime.

It is a super-3 number, since 3×138353121273413³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138353121272413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30168580628 + ... + 30168585213.

It is an arithmetic number, because the mean of its divisors is an integer number (34603364610387).

Almost surely, 2^{138353121273413} is an apocalyptic number.

It is an amenable number.

138353121273413 is a deficient number, since it is larger than the sum of its proper divisors (60337168135).

138353121273413 is an equidigital number, since it uses as much as digits as its factorization.

138353121273413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60337168134.

The product of its digits is 1088640, while the sum is 47.

The spelling of 138353121273413 in words is "one hundred thirty-eight trillion, three hundred fifty-three billion, one hundred twenty-one million, two hundred seventy-three thousand, four hundred thirteen".