2291326868213 has 4 divisors (see below), whose sum is σ = 2291688111648. Its totient is φ = 2290965624780.

The previous prime is 2291326868197. The next prime is 2291326868239. The reversal of 2291326868213 is 3128686231922.

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 2291326868213 - 2⁴ = 2291326868197 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 (2291326868263) 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, 180612203 + ... + 180624888.

It is an arithmetic number, because the mean of its divisors is an integer number (572922027912).

Almost surely, 2^{2291326868213} is an apocalyptic number.

It is an amenable number.

2291326868213 is a deficient number, since it is larger than the sum of its proper divisors (361243435).

2291326868213 is an equidigital number, since it uses as much as digits as its factorization.

2291326868213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361243434.

The product of its digits is 2985984, while the sum is 53.

The spelling of 2291326868213 in words is "two trillion, two hundred ninety-one billion, three hundred twenty-six million, eight hundred sixty-eight thousand, two hundred thirteen".