85429395593 has 2 divisors, whose sum is σ = 85429395594. Its totient is φ = 85429395592.

The previous prime is 85429395587. The next prime is 85429395619. The reversal of 85429395593 is 39559392458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84185281609 + 1244113984 = 290147^2 + 35272^2 .

It is a cyclic number.

It is not a de Polignac number, because 85429395593 - 2⁴ = 85429395577 is a prime.

It is not a weakly prime, because it can be changed into another prime (85429394593) 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, 42714697796 + 42714697797.

It is an arithmetic number, because the mean of its divisors is an integer number (42714697797).

Almost surely, 2^85429395593 is an apocalyptic number.

It is an amenable number.

85429395593 is a deficient number, since it is larger than the sum of its proper divisors (1).

85429395593 is an equidigital number, since it uses as much as digits as its factorization.

85429395593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488000, while the sum is 62.

The spelling of 85429395593 in words is "eighty-five billion, four hundred twenty-nine million, three hundred ninety-five thousand, five hundred ninety-three".