85324655557 has 2 divisors, whose sum is σ = 85324655558. Its totient is φ = 85324655556.

The previous prime is 85324655543. The next prime is 85324655567. The reversal of 85324655557 is 75555642358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80307624996 + 5017030561 = 283386^2 + 70831^2 .

It is a cyclic number.

It is not a de Polignac number, because 85324655557 - 2³⁵ = 50964917189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85324655498 and 85324655507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85324655567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42662327778 + 42662327779.

It is an arithmetic number, because the mean of its divisors is an integer number (42662327779).

Almost surely, 2^85324655557 is an apocalyptic number.

It is an amenable number.

85324655557 is a deficient number, since it is larger than the sum of its proper divisors (1).

85324655557 is an equidigital number, since it uses as much as digits as its factorization.

85324655557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200000, while the sum is 55.

The spelling of 85324655557 in words is "eighty-five billion, three hundred twenty-four million, six hundred fifty-five thousand, five hundred fifty-seven".