80408483999981 has 2 divisors, whose sum is σ = 80408483999982. Its totient is φ = 80408483999980.

The previous prime is 80408483999969. The next prime is 80408484000001. The reversal of 80408483999981 is 18999938480408.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42383563390756 + 38024920609225 = 6510266^2 + 6166435^2 .

It is a cyclic number.

It is not a de Polignac number, because 80408483999981 - 2¹⁸ = 80408483737837 is a prime.

It is a super-2 number, since 2×80408483999981² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80408483999896 and 80408483999905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80408483999681) 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 as a sum of consecutive naturals, namely, 40204241999990 + 40204241999991.

It is an arithmetic number, because the mean of its divisors is an integer number (40204241999991).

Almost surely, 2^{80408483999981} is an apocalyptic number.

It is an amenable number.

80408483999981 is a deficient number, since it is larger than the sum of its proper divisors (1).

80408483999981 is an equidigital number, since it uses as much as digits as its factorization.

80408483999981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1289945088, while the sum is 80.

The spelling of 80408483999981 in words is "eighty trillion, four hundred eight billion, four hundred eighty-three million, nine hundred ninety-nine thousand, nine hundred eighty-one".