85281773579 has 2 divisors, whose sum is σ = 85281773580. Its totient is φ = 85281773578.

The previous prime is 85281773569. The next prime is 85281773639. The reversal of 85281773579 is 97537718258.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85281773579 is a prime.

It is not a weakly prime, because it can be changed into another prime (85281773569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42640886789 + 42640886790.

It is an arithmetic number, because the mean of its divisors is an integer number (42640886790).

Almost surely, 2^85281773579 is an apocalyptic number.

85281773579 is a deficient number, since it is larger than the sum of its proper divisors (1).

85281773579 is an equidigital number, since it uses as much as digits as its factorization.

85281773579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29635200, while the sum is 62.

The spelling of 85281773579 in words is "eighty-five billion, two hundred eighty-one million, seven hundred seventy-three thousand, five hundred seventy-nine".