2108769206543 has 4 divisors (see below), whose sum is σ = 2165762968920. Its totient is φ = 2051775444168.

The previous prime is 2108769206483. The next prime is 2108769206587. The reversal of 2108769206543 is 3456029678012.

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 2108769206543 - 2²⁴ = 2108752429327 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 (2108769206143) 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, 28496881133 + ... + 28496881206.

It is an arithmetic number, because the mean of its divisors is an integer number (541440742230).

It is a 1-persistent number, because it is pandigital, but 2⋅2108769206543 = 4217538413086 is not.

Almost surely, 2^{2108769206543} is an apocalyptic number.

2108769206543 is a deficient number, since it is larger than the sum of its proper divisors (56993762377).

2108769206543 is an equidigital number, since it uses as much as digits as its factorization.

2108769206543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56993762376.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 2108769206543 in words is "two trillion, one hundred eight billion, seven hundred sixty-nine million, two hundred six thousand, five hundred forty-three".