80123977 has 2 divisors, whose sum is σ = 80123978. Its totient is φ = 80123976.

The previous prime is 80123959. The next prime is 80123987. The reversal of 80123977 is 77932108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55413136 + 24710841 = 7444^2 + 4971^2 .

It is a cyclic number.

It is not a de Polignac number, because 80123977 - 2¹¹ = 80121929 is a prime.

It is not a weakly prime, because it can be changed into another prime (80123957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40061988 + 40061989.

It is an arithmetic number, because the mean of its divisors is an integer number (40061989).

Almost surely, 2^80123977 is an apocalyptic number.

It is an amenable number.

80123977 is a deficient number, since it is larger than the sum of its proper divisors (1).

80123977 is an equidigital number, since it uses as much as digits as its factorization.

80123977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 80123977 is about 8951.1997519886. The cubic root of 80123977 is about 431.1094067497.

The spelling of 80123977 in words is "eighty million, one hundred twenty-three thousand, nine hundred seventy-seven".