85883638909 has 2 divisors, whose sum is σ = 85883638910. Its totient is φ = 85883638908.

The previous prime is 85883638847. The next prime is 85883638921. The reversal of 85883638909 is 90983638858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48633480900 + 37250158009 = 220530^2 + 193003^2 .

It is a cyclic number.

It is not a de Polignac number, because 85883638909 - 2¹⁹ = 85883114621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85883630909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42941819454 + 42941819455.

It is an arithmetic number, because the mean of its divisors is an integer number (42941819455).

Almost surely, 2^85883638909 is an apocalyptic number.

It is an amenable number.

85883638909 is a deficient number, since it is larger than the sum of its proper divisors (1).

85883638909 is an equidigital number, since it uses as much as digits as its factorization.

85883638909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89579520, while the sum is 67.

The spelling of 85883638909 in words is "eighty-five billion, eight hundred eighty-three million, six hundred thirty-eight thousand, nine hundred nine".