80777176049 has 2 divisors, whose sum is σ = 80777176050. Its totient is φ = 80777176048.

The previous prime is 80777175989. The next prime is 80777176141. The reversal of 80777176049 is 94067177708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52655563024 + 28121613025 = 229468^2 + 167695^2 .

It is a cyclic number.

It is not a de Polignac number, because 80777176049 - 2⁸ = 80777175793 is a prime.

It is a super-2 number, since 2×80777176049² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80777175985 and 80777176003.

It is not a weakly prime, because it can be changed into another prime (80777176349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40388588024 + 40388588025.

It is an arithmetic number, because the mean of its divisors is an integer number (40388588025).

Almost surely, 2^80777176049 is an apocalyptic number.

It is an amenable number.

80777176049 is a deficient number, since it is larger than the sum of its proper divisors (1).

80777176049 is an equidigital number, since it uses as much as digits as its factorization.

80777176049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4148928, while the sum is 56.

The spelling of 80777176049 in words is "eighty billion, seven hundred seventy-seven million, one hundred seventy-six thousand, forty-nine".