80511756757 has 2 divisors, whose sum is σ = 80511756758. Its totient is φ = 80511756756.

The previous prime is 80511756727. The next prime is 80511756761. The reversal of 80511756757 is 75765711508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66609931921 + 13901824836 = 258089^2 + 117906^2 .

It is a cyclic number.

It is not a de Polignac number, because 80511756757 - 2¹⁵ = 80511723989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80511756727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40255878378 + 40255878379.

It is an arithmetic number, because the mean of its divisors is an integer number (40255878379).

Almost surely, 2^80511756757 is an apocalyptic number.

It is an amenable number.

80511756757 is a deficient number, since it is larger than the sum of its proper divisors (1).

80511756757 is an equidigital number, since it uses as much as digits as its factorization.

80511756757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2058000, while the sum is 52.

The spelling of 80511756757 in words is "eighty billion, five hundred eleven million, seven hundred fifty-six thousand, seven hundred fifty-seven".