38665802128 has 40 divisors (see below), whose sum is σ = 75128682528. Its totient is φ = 19277836032.

The previous prime is 38665802089. The next prime is 38665802183. The reversal of 38665802128 is 82120856683.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12540075 + ... + 12543157.

Almost surely, 2^38665802128 is an apocalyptic number.

It is an amenable number.

38665802128 is a deficient number, since it is larger than the sum of its proper divisors (36462880400).

38665802128 is a wasteful number, since it uses less digits than its factorization.

38665802128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071 (or 5065 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 38665802128 in words is "thirty-eight billion, six hundred sixty-five million, eight hundred two thousand, one hundred twenty-eight".