85858585858597 has 2 divisors, whose sum is σ = 85858585858598. Its totient is φ = 85858585858596.

The previous prime is 85858585858583. The next prime is 85858585858607. The reversal of 85858585858597 is 79585858585858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79287520157316 + 6571065701281 = 8904354^2 + 2563409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85858585858597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85858585858697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42929292929298 + 42929292929299.

It is an arithmetic number, because the mean of its divisors is an integer number (42929292929299).

Almost surely, 2^{85858585858597} is an apocalyptic number.

It is an amenable number.

85858585858597 is a deficient number, since it is larger than the sum of its proper divisors (1).

85858585858597 is an equidigital number, since it uses as much as digits as its factorization.

85858585858597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048000000, while the sum is 94.

The spelling of 85858585858597 in words is "eighty-five trillion, eight hundred fifty-eight billion, five hundred eighty-five million, eight hundred fifty-eight thousand, five hundred ninety-seven".