85388465797 has 2 divisors, whose sum is σ = 85388465798. Its totient is φ = 85388465796.

The previous prime is 85388465753. The next prime is 85388465807. The reversal of 85388465797 is 79756488358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50319911041 + 35068554756 = 224321^2 + 187266^2 .

It is a cyclic number.

It is not a de Polignac number, because 85388465797 - 2¹⁵ = 85388433029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85388465297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42694232898 + 42694232899.

It is an arithmetic number, because the mean of its divisors is an integer number (42694232899).

Almost surely, 2^85388465797 is an apocalyptic number.

It is an amenable number.

85388465797 is a deficient number, since it is larger than the sum of its proper divisors (1).

85388465797 is an equidigital number, since it uses as much as digits as its factorization.

85388465797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 406425600, while the sum is 70.

It can be divided in two parts, 853884 and 65797, that added together give a square (919681 = 959²).

The spelling of 85388465797 in words is "eighty-five billion, three hundred eighty-eight million, four hundred sixty-five thousand, seven hundred ninety-seven".