8641922791013 has 4 divisors (see below), whose sum is σ = 8641937483820. Its totient is φ = 8641908098208.

The previous prime is 8641922791001. The next prime is 8641922791049. The reversal of 8641922791013 is 3101972291468.

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 235999696804 + 8405923094209 = 485798^2 + 2899297^2 .

It is a cyclic number.

It is not a de Polignac number, because 8641922791013 - 2²⁶ = 8641855682149 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 (8641922791613) 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, 6425678 + ... + 7653311.

It is an arithmetic number, because the mean of its divisors is an integer number (2160484370955).

Almost surely, 2^{8641922791013} is an apocalyptic number.

It is an amenable number.

8641922791013 is a deficient number, since it is larger than the sum of its proper divisors (14692807).

8641922791013 is a wasteful number, since it uses less digits than its factorization.

8641922791013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14692806.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 8641922791013 in words is "eight trillion, six hundred forty-one billion, nine hundred twenty-two million, seven hundred ninety-one thousand, thirteen".