80049528221 has 8 divisors (see below), whose sum is σ = 87833735640. Its totient is φ = 72497685312.

The previous prime is 80049528217. The next prime is 80049528239. The reversal of 80049528221 is 12282594008.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1599120121 + 78450408100 = 39989^2 + 280090^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80049528221 - 2² = 80049528217 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 (80049528241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58090406 + ... + 58091783.

It is an arithmetic number, because the mean of its divisors is an integer number (10979216955).

Almost surely, 2^80049528221 is an apocalyptic number.

It is an amenable number.

80049528221 is a deficient number, since it is larger than the sum of its proper divisors (7784207419).

80049528221 is a wasteful number, since it uses less digits than its factorization.

80049528221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116182255.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 80049528221 in words is "eighty billion, forty-nine million, five hundred twenty-eight thousand, two hundred twenty-one".