82385805947 has 2 divisors, whose sum is σ = 82385805948. Its totient is φ = 82385805946.

The previous prime is 82385805919. The next prime is 82385805959. The reversal of 82385805947 is 74950858328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82385805947 - 2⁶ = 82385805883 is a prime.

It is not a weakly prime, because it can be changed into another prime (82385805907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41192902973 + 41192902974.

It is an arithmetic number, because the mean of its divisors is an integer number (41192902974).

Almost surely, 2^82385805947 is an apocalyptic number.

82385805947 is a deficient number, since it is larger than the sum of its proper divisors (1).

82385805947 is an equidigital number, since it uses as much as digits as its factorization.

82385805947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19353600, while the sum is 59.

It can be divided in two parts, 8238 and 5805947, that added together give a palindrome (5814185).

The spelling of 82385805947 in words is "eighty-two billion, three hundred eighty-five million, eight hundred five thousand, nine hundred forty-seven".