80857570757 has 2 divisors, whose sum is σ = 80857570758. Its totient is φ = 80857570756.

The previous prime is 80857570727. The next prime is 80857570817. The reversal of 80857570757 is 75707575808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80591260996 + 266309761 = 283886^2 + 16319^2 .

It is a cyclic number.

It is not a de Polignac number, because 80857570757 - 2⁶ = 80857570693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80857570696 and 80857570705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80857570727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40428785378 + 40428785379.

It is an arithmetic number, because the mean of its divisors is an integer number (40428785379).

Almost surely, 2^80857570757 is an apocalyptic number.

It is an amenable number.

80857570757 is a deficient number, since it is larger than the sum of its proper divisors (1).

80857570757 is an equidigital number, since it uses as much as digits as its factorization.

80857570757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19208000, while the sum is 59.

The spelling of 80857570757 in words is "eighty billion, eight hundred fifty-seven million, five hundred seventy thousand, seven hundred fifty-seven".