80771340757 has 2 divisors, whose sum is σ = 80771340758. Its totient is φ = 80771340756.

The previous prime is 80771340737. The next prime is 80771340773. The reversal of 80771340757 is 75704317708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80632713681 + 138627076 = 283959^2 + 11774^2 .

It is a cyclic number.

It is not a de Polignac number, because 80771340757 - 2¹¹ = 80771338709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80771340757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80771340737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40385670378 + 40385670379.

It is an arithmetic number, because the mean of its divisors is an integer number (40385670379).

Almost surely, 2^80771340757 is an apocalyptic number.

It is an amenable number.

80771340757 is a deficient number, since it is larger than the sum of its proper divisors (1).

80771340757 is an equidigital number, since it uses as much as digits as its factorization.

80771340757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152480, while the sum is 49.

The spelling of 80771340757 in words is "eighty billion, seven hundred seventy-one million, three hundred forty thousand, seven hundred fifty-seven".