85751726857 has 2 divisors, whose sum is σ = 85751726858. Its totient is φ = 85751726856.

The previous prime is 85751726849. The next prime is 85751726887. The reversal of 85751726857 is 75862715758.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85748823241 + 2903616 = 292829^2 + 1704^2 .

It is a cyclic number.

It is not a de Polignac number, because 85751726857 - 2³ = 85751726849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85751726795 and 85751726804.

It is not a weakly prime, because it can be changed into another prime (85751726887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42875863428 + 42875863429.

It is an arithmetic number, because the mean of its divisors is an integer number (42875863429).

Almost surely, 2^85751726857 is an apocalyptic number.

It is an amenable number.

85751726857 is a deficient number, since it is larger than the sum of its proper divisors (1).

85751726857 is an equidigital number, since it uses as much as digits as its factorization.

85751726857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32928000, while the sum is 61.

The spelling of 85751726857 in words is "eighty-five billion, seven hundred fifty-one million, seven hundred twenty-six thousand, eight hundred fifty-seven".