85504618373 has 2 divisors, whose sum is σ = 85504618374. Its totient is φ = 85504618372.

The previous prime is 85504618337. The next prime is 85504618379. The reversal of 85504618373 is 37381640558.

Together with previous prime (85504618337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84119141089 + 1385477284 = 290033^2 + 37222^2 .

It is a cyclic number.

It is not a de Polignac number, because 85504618373 - 2¹⁴ = 85504601989 is a prime.

It is a super-2 number, since 2×85504618373² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85504618379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42752309186 + 42752309187.

It is an arithmetic number, because the mean of its divisors is an integer number (42752309187).

Almost surely, 2^85504618373 is an apocalyptic number.

It is an amenable number.

85504618373 is a deficient number, since it is larger than the sum of its proper divisors (1).

85504618373 is an equidigital number, since it uses as much as digits as its factorization.

85504618373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 85504618373 in words is "eighty-five billion, five hundred four million, six hundred eighteen thousand, three hundred seventy-three".