2185716795643 has 4 divisors (see below), whose sum is σ = 2189095029360. Its totient is φ = 2182338561928.

The previous prime is 2185716795607. The next prime is 2185716795683. The reversal of 2185716795643 is 3465976175812.

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 2185716795643 - 2¹³ = 2185716787451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2185716795683) 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, 1689115888 + ... + 1689117181.

It is an arithmetic number, because the mean of its divisors is an integer number (547273757340).

Almost surely, 2^{2185716795643} is an apocalyptic number.

2185716795643 is a deficient number, since it is larger than the sum of its proper divisors (3378233717).

2185716795643 is an equidigital number, since it uses as much as digits as its factorization.

2185716795643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378233716.

The product of its digits is 76204800, while the sum is 64.

The spelling of 2185716795643 in words is "two trillion, one hundred eighty-five billion, seven hundred sixteen million, seven hundred ninety-five thousand, six hundred forty-three".