85642448234 has 32 divisors (see below), whose sum is σ = 149878252800. Its totient is φ = 36687641424.

The previous prime is 85642448233. The next prime is 85642448239. The reversal of 85642448234 is 43284424658.

It is not an unprimeable number, because it can be changed into a prime (85642448233) 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 in 15 ways as a sum of consecutive naturals, for example, 1590419 + ... + 1643385.

It is an arithmetic number, because the mean of its divisors is an integer number (4683695400).

Almost surely, 2^85642448234 is an apocalyptic number.

85642448234 is a deficient number, since it is larger than the sum of its proper divisors (64235804566).

85642448234 is a wasteful number, since it uses less digits than its factorization.

85642448234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55347 (or 55333 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 50.

The spelling of 85642448234 in words is "eighty-five billion, six hundred forty-two million, four hundred forty-eight thousand, two hundred thirty-four".