138715882630121 has 4 divisors (see below), whose sum is σ = 139337926947072. Its totient is φ = 138093838313172.

The previous prime is 138715882630109. The next prime is 138715882630201. The reversal of 138715882630121 is 121036288517831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138715882630121 - 2⁶ = 138715882630057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128715882630121) 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, 311022158141 + ... + 311022158586.

It is an arithmetic number, because the mean of its divisors is an integer number (34834481736768).

Almost surely, 2^{138715882630121} is an apocalyptic number.

It is an amenable number.

138715882630121 is a deficient number, since it is larger than the sum of its proper divisors (622044316951).

138715882630121 is an equidigital number, since it uses as much as digits as its factorization.

138715882630121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622044316950.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 138715882630121 in words is "one hundred thirty-eight trillion, seven hundred fifteen billion, eight hundred eighty-two million, six hundred thirty thousand, one hundred twenty-one".