85143539344 has 10 divisors (see below), whose sum is σ = 164965607510. Its totient is φ = 42571769664.

The previous prime is 85143539339. The next prime is 85143539387. The reversal of 85143539344 is 44393534158.

It can be written as a sum of positive squares in only one way, i.e., 84809088400 + 334450944 = 291220^2 + 18288^2 .

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 as a sum of consecutive naturals, namely, 2660735589 + ... + 2660735620.

It is an arithmetic number, because the mean of its divisors is an integer number (16496560751).

Almost surely, 2^85143539344 is an apocalyptic number.

It is an amenable number.

85143539344 is a deficient number, since it is larger than the sum of its proper divisors (79822068166).

85143539344 is a wasteful number, since it uses less digits than its factorization.

85143539344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321471217 (or 5321471211 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 49.

The spelling of 85143539344 in words is "eighty-five billion, one hundred forty-three million, five hundred thirty-nine thousand, three hundred forty-four".