85250078593 has 2 divisors, whose sum is σ = 85250078594. Its totient is φ = 85250078592.

The previous prime is 85250078591. The next prime is 85250078609. The reversal of 85250078593 is 39587005258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57397138929 + 27852939664 = 239577^2 + 166892^2 .

It is a cyclic number.

It is not a de Polignac number, because 85250078593 - 2¹ = 85250078591 is a prime.

It is a super-2 number, since 2×85250078593² (a number of 23 digits) contains 22 as substring.

Together with 85250078591, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 85250078593.

It is not a weakly prime, because it can be changed into another prime (85250078591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42625039296 + 42625039297.

It is an arithmetic number, because the mean of its divisors is an integer number (42625039297).

Almost surely, 2^85250078593 is an apocalyptic number.

It is an amenable number.

85250078593 is a deficient number, since it is larger than the sum of its proper divisors (1).

85250078593 is an equidigital number, since it uses as much as digits as its factorization.

85250078593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024000, while the sum is 52.

The spelling of 85250078593 in words is "eighty-five billion, two hundred fifty million, seventy-eight thousand, five hundred ninety-three".