38688309503 has 4 divisors (see below), whose sum is σ = 38721349368. Its totient is φ = 38655269640.

The previous prime is 38688309497. The next prime is 38688309511. The reversal of 38688309503 is 30590388683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30590388683 = 19 ⋅1610020457.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38688309503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38681309503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16518176 + ... + 16520517.

It is an arithmetic number, because the mean of its divisors is an integer number (9680337342).

Almost surely, 2^38688309503 is an apocalyptic number.

38688309503 is a deficient number, since it is larger than the sum of its proper divisors (33039865).

38688309503 is a wasteful number, since it uses less digits than its factorization.

38688309503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33039864.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 38688309503 in words is "thirty-eight billion, six hundred eighty-eight million, three hundred nine thousand, five hundred three".