39686601868 has 12 divisors (see below), whose sum is σ = 69550633152. Its totient is φ = 19814992400.

The previous prime is 39686601841. The next prime is 39686601869. The reversal of 39686601868 is 86810668693.

It is a super-3 number, since 3×39686601868³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (39686601869) 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 3 ways as a sum of consecutive naturals, for example, 7073980 + ... + 7079587.

It is an arithmetic number, because the mean of its divisors is an integer number (5795886096).

Almost surely, 2^39686601868 is an apocalyptic number.

It is an amenable number.

39686601868 is a deficient number, since it is larger than the sum of its proper divisors (29864031284).

39686601868 is a wasteful number, since it uses less digits than its factorization.

39686601868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14154272 (or 14154270 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 61.

The spelling of 39686601868 in words is "thirty-nine billion, six hundred eighty-six million, six hundred one thousand, eight hundred sixty-eight".