85428197385 has 32 divisors (see below), whose sum is σ = 143928299520. Its totient is φ = 43148952000.

The previous prime is 85428197369. The next prime is 85428197489. The reversal of 85428197385 is 58379182458.

It is not a de Polignac number, because 85428197385 - 2⁴ = 85428197369 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 808360 + ... + 907910.

It is an arithmetic number, because the mean of its divisors is an integer number (4497759360).

Almost surely, 2^85428197385 is an apocalyptic number.

It is an amenable number.

85428197385 is a deficient number, since it is larger than the sum of its proper divisors (58500102135).

85428197385 is a wasteful number, since it uses less digits than its factorization.

85428197385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102589.

The product of its digits is 19353600, while the sum is 60.

The spelling of 85428197385 in words is "eighty-five billion, four hundred twenty-eight million, one hundred ninety-seven thousand, three hundred eighty-five".