80004843977 has 2 divisors, whose sum is σ = 80004843978. Its totient is φ = 80004843976.

The previous prime is 80004843953. The next prime is 80004844009. The reversal of 80004843977 is 77934840008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41467620496 + 38537223481 = 203636^2 + 196309^2 .

It is a cyclic number.

It is not a de Polignac number, because 80004843977 - 2²⁶ = 79937735113 is a prime.

It is a super-2 number, since 2×80004843977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80004843917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40002421988 + 40002421989.

It is an arithmetic number, because the mean of its divisors is an integer number (40002421989).

Almost surely, 2^80004843977 is an apocalyptic number.

It is an amenable number.

80004843977 is a deficient number, since it is larger than the sum of its proper divisors (1).

80004843977 is an equidigital number, since it uses as much as digits as its factorization.

80004843977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 80004843977 in words is "eighty billion, four million, eight hundred forty-three thousand, nine hundred seventy-seven".