85634909359 has 2 divisors, whose sum is σ = 85634909360. Its totient is φ = 85634909358.

The previous prime is 85634909279. The next prime is 85634909447. The reversal of 85634909359 is 95390943658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85634909359 - 2²⁷ = 85500691631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85634909297 and 85634909306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85634903359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42817454679 + 42817454680.

It is an arithmetic number, because the mean of its divisors is an integer number (42817454680).

Almost surely, 2^85634909359 is an apocalyptic number.

85634909359 is a deficient number, since it is larger than the sum of its proper divisors (1).

85634909359 is an equidigital number, since it uses as much as digits as its factorization.

85634909359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31492800, while the sum is 61.

The spelling of 85634909359 in words is "eighty-five billion, six hundred thirty-four million, nine hundred nine thousand, three hundred fifty-nine".