2080221643 has 4 divisors (see below), whose sum is σ = 2202587640. Its totient is φ = 1957855648.

The previous prime is 2080221629. The next prime is 2080221721. The reversal of 2080221643 is 3461220802.

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 2080221643 - 2²⁵ = 2046667211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2080221623) 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, 61182973 + ... + 61183006.

It is an arithmetic number, because the mean of its divisors is an integer number (550646910).

Almost surely, 2^2080221643 is an apocalyptic number.

2080221643 is a deficient number, since it is larger than the sum of its proper divisors (122365997).

2080221643 is a wasteful number, since it uses less digits than its factorization.

2080221643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122365996.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2080221643 is about 45609.4468613685. The cubic root of 2080221643 is about 1276.5461991039.

The spelling of 2080221643 in words is "two billion, eighty million, two hundred twenty-one thousand, six hundred forty-three".