2820294945673 has 4 divisors (see below), whose sum is σ = 2825450878480. Its totient is φ = 2815139012868.

The previous prime is 2820294945647. The next prime is 2820294945683. The reversal of 2820294945673 is 3765494920282.

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 2820294945673 - 2²⁹ = 2819758074761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2820294945613) 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, 2577965583 + ... + 2577966676.

It is an arithmetic number, because the mean of its divisors is an integer number (706362719620).

Almost surely, 2^{2820294945673} is an apocalyptic number.

It is an amenable number.

2820294945673 is a deficient number, since it is larger than the sum of its proper divisors (5155932807).

2820294945673 is an equidigital number, since it uses as much as digits as its factorization.

2820294945673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5155932806.

The product of its (nonzero) digits is 52254720, while the sum is 61.

The spelling of 2820294945673 in words is "two trillion, eight hundred twenty billion, two hundred ninety-four million, nine hundred forty-five thousand, six hundred seventy-three".