80206204849 has 3 divisors (see below), whose sum is σ = 80206488057. Its totient is φ = 80205921642.

The previous prime is 80206204801. The next prime is 80206204891. The reversal of 80206204849 is 94840260208.

The square root of 80206204849 is 283207.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 80206204849 - 2¹¹ = 80206202801 is a prime.

It is a super-2 number, since 2×80206204849² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80206201849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 141604 + ... + 424810.

It is an arithmetic number, because the mean of its divisors is an integer number (26735496019).

Almost surely, 2^80206204849 is an apocalyptic number.

80206204849 is the 283207-th square number.

80206204849 is the 141604-th centered octagonal number.

It is an amenable number.

80206204849 is a deficient number, since it is larger than the sum of its proper divisors (283208).

80206204849 is an frugal number, since it uses more digits than its factorization.

80206204849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566414 (or 283207 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 80206204849 in words is "eighty billion, two hundred six million, two hundred four thousand, eight hundred forty-nine".