2129349841791 has 4 divisors (see below), whose sum is σ = 2839133122392. Its totient is φ = 1419566561192.

The previous prime is 2129349841733. The next prime is 2129349841807. The reversal of 2129349841791 is 1971489439212.

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 2129349841791 - 2⁹ = 2129349841279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129349841291) 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, 354891640296 + ... + 354891640301.

It is an arithmetic number, because the mean of its divisors is an integer number (709783280598).

Almost surely, 2^{2129349841791} is an apocalyptic number.

2129349841791 is a deficient number, since it is larger than the sum of its proper divisors (709783280601).

2129349841791 is an equidigital number, since it uses as much as digits as its factorization.

2129349841791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709783280600.

The product of its digits is 7838208, while the sum is 60.

The spelling of 2129349841791 in words is "two trillion, one hundred twenty-nine billion, three hundred forty-nine million, eight hundred forty-one thousand, seven hundred ninety-one".