38966144694985 has 16 divisors (see below), whose sum is σ = 46786921606656. Its totient is φ = 31154552065728.

The previous prime is 38966144694929. The next prime is 38966144695001. The reversal of 38966144694985 is 58949644166983.

It is a cyclic number.

It is not a de Polignac number, because 38966144694985 - 2¹⁹ = 38966144170697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38966144694899 and 38966144694908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219454912 + ... + 219632398.

It is an arithmetic number, because the mean of its divisors is an integer number (2924182600416).

Almost surely, 2^{38966144694985} is an apocalyptic number.

It is an amenable number.

38966144694985 is a deficient number, since it is larger than the sum of its proper divisors (7820776911671).

38966144694985 is a wasteful number, since it uses less digits than its factorization.

38966144694985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203112.

The product of its digits is 9674588160, while the sum is 82.

The spelling of 38966144694985 in words is "thirty-eight trillion, nine hundred sixty-six billion, one hundred forty-four million, six hundred ninety-four thousand, nine hundred eighty-five".