38385652871831 has 4 divisors (see below), whose sum is σ = 38429124733272. Its totient is φ = 38342181010392.

The previous prime is 38385652871821. The next prime is 38385652871843. The reversal of 38385652871831 is 13817825658383.

38385652871831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38385652871831 is a prime.

It is a super-2 number, since 2×38385652871831² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38385652871821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21735929396 + ... + 21735931161.

It is an arithmetic number, because the mean of its divisors is an integer number (9607281183318).

Almost surely, 2^{38385652871831} is an apocalyptic number.

38385652871831 is a deficient number, since it is larger than the sum of its proper divisors (43471861441).

38385652871831 is an equidigital number, since it uses as much as digits as its factorization.

38385652871831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43471861440.

The product of its digits is 232243200, while the sum is 68.

The spelling of 38385652871831 in words is "thirty-eight trillion, three hundred eighty-five billion, six hundred fifty-two million, eight hundred seventy-one thousand, eight hundred thirty-one".