80477309173 has 2 divisors, whose sum is σ = 80477309174. Its totient is φ = 80477309172.

The previous prime is 80477309113. The next prime is 80477309179. The reversal of 80477309173 is 37190377408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80396632849 + 80676324 = 283543^2 + 8982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80477309173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80477309179) 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, 40238654586 + 40238654587.

It is an arithmetic number, because the mean of its divisors is an integer number (40238654587).

Almost surely, 2^80477309173 is an apocalyptic number.

It is an amenable number.

80477309173 is a deficient number, since it is larger than the sum of its proper divisors (1).

80477309173 is an equidigital number, since it uses as much as digits as its factorization.

80477309173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 80477309173 in words is "eighty billion, four hundred seventy-seven million, three hundred nine thousand, one hundred seventy-three".