85665187708 has 12 divisors (see below), whose sum is σ = 150000198712. Its totient is φ = 42807988080.

The previous prime is 85665187687. The next prime is 85665187757. The reversal of 85665187708 is 80778156658.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6143610 + ... + 6157537.

Almost surely, 2^85665187708 is an apocalyptic number.

It is an amenable number.

85665187708 is a deficient number, since it is larger than the sum of its proper divisors (64335011004).

85665187708 is a wasteful number, since it uses less digits than its factorization.

85665187708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302892 (or 12302890 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 61.

The spelling of 85665187708 in words is "eighty-five billion, six hundred sixty-five million, one hundred eighty-seven thousand, seven hundred eight".