85353509947 has 2 divisors, whose sum is σ = 85353509948. Its totient is φ = 85353509946.

The previous prime is 85353509909. The next prime is 85353510029. The reversal of 85353509947 is 74990535358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85353509947 - 2⁷ = 85353509819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85353509891 and 85353509900.

It is not a weakly prime, because it can be changed into another prime (85353509347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42676754973 + 42676754974.

It is an arithmetic number, because the mean of its divisors is an integer number (42676754974).

Almost surely, 2^85353509947 is an apocalyptic number.

85353509947 is a deficient number, since it is larger than the sum of its proper divisors (1).

85353509947 is an equidigital number, since it uses as much as digits as its factorization.

85353509947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412000, while the sum is 58.

The spelling of 85353509947 in words is "eighty-five billion, three hundred fifty-three million, five hundred nine thousand, nine hundred forty-seven".