85471236889 has 8 divisors (see below), whose sum is σ = 91644514560. Its totient is φ = 79425243456.

The previous prime is 85471236839. The next prime is 85471236911. The reversal of 85471236889 is 98863217458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85471236889 - 2¹³ = 85471228697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85471236839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31819669 + ... + 31822354.

It is an arithmetic number, because the mean of its divisors is an integer number (11455564320).

Almost surely, 2^85471236889 is an apocalyptic number.

It is an amenable number.

85471236889 is a deficient number, since it is larger than the sum of its proper divisors (6173277671).

85471236889 is a wasteful number, since it uses less digits than its factorization.

85471236889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63642119.

The product of its digits is 23224320, while the sum is 61.

The spelling of 85471236889 in words is "eighty-five billion, four hundred seventy-one million, two hundred thirty-six thousand, eight hundred eighty-nine".