85937240869 has 2 divisors, whose sum is σ = 85937240870. Its totient is φ = 85937240868.

The previous prime is 85937240843. The next prime is 85937240887. The reversal of 85937240869 is 96804273958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72116417025 + 13820823844 = 268545^2 + 117562^2 .

It is a cyclic number.

It is not a de Polignac number, because 85937240869 - 2¹⁵ = 85937208101 is a prime.

It is a super-2 number, since 2×85937240869² (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 (85937240899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42968620434 + 42968620435.

It is an arithmetic number, because the mean of its divisors is an integer number (42968620435).

Almost surely, 2^85937240869 is an apocalyptic number.

It is an amenable number.

85937240869 is a deficient number, since it is larger than the sum of its proper divisors (1).

85937240869 is an equidigital number, since it uses as much as digits as its factorization.

85937240869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 85937240869 in words is "eighty-five billion, nine hundred thirty-seven million, two hundred forty thousand, eight hundred sixty-nine".