85836487634647 has 2 divisors, whose sum is σ = 85836487634648. Its totient is φ = 85836487634646.

The previous prime is 85836487634549. The next prime is 85836487634663. The reversal of 85836487634647 is 74643678463858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85836487634647 - 2³⁵ = 85802127896279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85836487632647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42918243817323 + 42918243817324.

It is an arithmetic number, because the mean of its divisors is an integer number (42918243817324).

Almost surely, 2^{85836487634647} is an apocalyptic number.

85836487634647 is a deficient number, since it is larger than the sum of its proper divisors (1).

85836487634647 is an equidigital number, since it uses as much as digits as its factorization.

85836487634647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15606743040, while the sum is 79.

The spelling of 85836487634647 in words is "eighty-five trillion, eight hundred thirty-six billion, four hundred eighty-seven million, six hundred thirty-four thousand, six hundred forty-seven".