8138841330391 has 4 divisors (see below), whose sum is σ = 8141286164400. Its totient is φ = 8136396496384.

The previous prime is 8138841330383. The next prime is 8138841330457. The reversal of 8138841330391 is 1930331488318.

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

It is a cyclic number.

It is not a de Polignac number, because 8138841330391 - 2³ = 8138841330383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138841333391) 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, 1222412011 + ... + 1222418668.

It is an arithmetic number, because the mean of its divisors is an integer number (2035321541100).

Almost surely, 2^{8138841330391} is an apocalyptic number.

8138841330391 is a deficient number, since it is larger than the sum of its proper divisors (2444834009).

8138841330391 is a wasteful number, since it uses less digits than its factorization.

8138841330391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444834008.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 8138841330391 in words is "eight trillion, one hundred thirty-eight billion, eight hundred forty-one million, three hundred thirty thousand, three hundred ninety-one".