80803345325821 has 2 divisors, whose sum is σ = 80803345325822. Its totient is φ = 80803345325820.

The previous prime is 80803345325749. The next prime is 80803345325887. The reversal of 80803345325821 is 12852354330808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48562082822500 + 32241262503321 = 6968650^2 + 5678139^2 .

It is a cyclic number.

It is not a de Polignac number, because 80803345325821 - 2¹⁷ = 80803345194749 is a prime.

It is a super-3 number, since 3×80803345325821³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80803345335821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40401672662910 + 40401672662911.

It is an arithmetic number, because the mean of its divisors is an integer number (40401672662911).

Almost surely, 2^{80803345325821} is an apocalyptic number.

It is an amenable number.

80803345325821 is a deficient number, since it is larger than the sum of its proper divisors (1).

80803345325821 is an equidigital number, since it uses as much as digits as its factorization.

80803345325821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5529600, while the sum is 52.

The spelling of 80803345325821 in words is "eighty trillion, eight hundred three billion, three hundred forty-five million, three hundred twenty-five thousand, eight hundred twenty-one".