85379754289 has 2 divisors, whose sum is σ = 85379754290. Its totient is φ = 85379754288.

The previous prime is 85379754277. The next prime is 85379754307. The reversal of 85379754289 is 98245797358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61792016400 + 23587737889 = 248580^2 + 153583^2 .

It is a cyclic number.

It is not a de Polignac number, because 85379754289 - 2⁹ = 85379753777 is a prime.

It is not a weakly prime, because it can be changed into another prime (85379784289) 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, 42689877144 + 42689877145.

It is an arithmetic number, because the mean of its divisors is an integer number (42689877145).

Almost surely, 2^85379754289 is an apocalyptic number.

It is an amenable number.

85379754289 is a deficient number, since it is larger than the sum of its proper divisors (1).

85379754289 is an equidigital number, since it uses as much as digits as its factorization.

85379754289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 152409600, while the sum is 67.

The spelling of 85379754289 in words is "eighty-five billion, three hundred seventy-nine million, seven hundred fifty-four thousand, two hundred eighty-nine".