8379815109121 has 4 divisors (see below), whose sum is σ = 8388445197744. Its totient is φ = 8371185020500.

The previous prime is 8379815109031. The next prime is 8379815109151. The reversal of 8379815109121 is 1219015189738.

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 8379815109121 - 2¹¹ = 8379815107073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8379815109151) 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, 4315042855 + ... + 4315044796.

It is an arithmetic number, because the mean of its divisors is an integer number (2097111299436).

Almost surely, 2^{8379815109121} is an apocalyptic number.

It is an amenable number.

8379815109121 is a deficient number, since it is larger than the sum of its proper divisors (8630088623).

8379815109121 is an equidigital number, since it uses as much as digits as its factorization.

8379815109121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8630088622.

The product of its (nonzero) digits is 1088640, while the sum is 55.

The spelling of 8379815109121 in words is "eight trillion, three hundred seventy-nine billion, eight hundred fifteen million, one hundred nine thousand, one hundred twenty-one".