85775482447 has 2 divisors, whose sum is σ = 85775482448. Its totient is φ = 85775482446.

The previous prime is 85775482411. The next prime is 85775482451. The reversal of 85775482447 is 74428457758.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85775482447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85775482487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42887741223 + 42887741224.

It is an arithmetic number, because the mean of its divisors is an integer number (42887741224).

Almost surely, 2^85775482447 is an apocalyptic number.

85775482447 is a deficient number, since it is larger than the sum of its proper divisors (1).

85775482447 is an equidigital number, since it uses as much as digits as its factorization.

85775482447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70246400, while the sum is 61.

The spelling of 85775482447 in words is "eighty-five billion, seven hundred seventy-five million, four hundred eighty-two thousand, four hundred forty-seven".