8243385389575 has 54 divisors (see below), whose sum is σ = 12330339402264. Its totient is φ = 5354632686240.

The previous prime is 8243385389573. The next prime is 8243385389587. The reversal of 8243385389575 is 5759835833428.

It is not a de Polignac number, because 8243385389575 - 2¹ = 8243385389573 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 (8243385389573) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 721642314 + ... + 721653736.

Almost surely, 2^{8243385389575} is an apocalyptic number.

8243385389575 is a deficient number, since it is larger than the sum of its proper divisors (4086954012689).

8243385389575 is an frugal number, since it uses more digits than its factorization.

8243385389575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22901 (or 11454 counting only the distinct ones).

The product of its digits is 870912000, while the sum is 70.

The spelling of 8243385389575 in words is "eight trillion, two hundred forty-three billion, three hundred eighty-five million, three hundred eighty-nine thousand, five hundred seventy-five".