80510720127797 has 2 divisors, whose sum is σ = 80510720127798. Its totient is φ = 80510720127796.

The previous prime is 80510720127713. The next prime is 80510720127829. The reversal of 80510720127797 is 79772102701508.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74448837883876 + 6061882243921 = 8628374^2 + 2462089^2 .

It is a cyclic number.

It is not a de Polignac number, because 80510720127797 - 2³² = 80506425160501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80510720127197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40255360063898 + 40255360063899.

It is an arithmetic number, because the mean of its divisors is an integer number (40255360063899).

Almost surely, 2^{80510720127797} is an apocalyptic number.

It is an amenable number.

80510720127797 is a deficient number, since it is larger than the sum of its proper divisors (1).

80510720127797 is an equidigital number, since it uses as much as digits as its factorization.

80510720127797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3457440, while the sum is 56.

The spelling of 80510720127797 in words is "eighty trillion, five hundred ten billion, seven hundred twenty million, one hundred twenty-seven thousand, seven hundred ninety-seven".