384145542823 has 4 divisors (see below), whose sum is σ = 439023477520. Its totient is φ = 329267608128.

The previous prime is 384145542773. The next prime is 384145542857. The reversal of 384145542823 is 328245541483.

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

It is a cyclic number.

It is not a de Polignac number, because 384145542823 - 2¹³ = 384145534631 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 (384145582823) 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, 27438967338 + ... + 27438967351.

It is an arithmetic number, because the mean of its divisors is an integer number (109755869380).

Almost surely, 2^384145542823 is an apocalyptic number.

384145542823 is a deficient number, since it is larger than the sum of its proper divisors (54877934697).

384145542823 is an equidigital number, since it uses as much as digits as its factorization.

384145542823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54877934696.

The product of its digits is 3686400, while the sum is 49.

The spelling of 384145542823 in words is "three hundred eighty-four billion, one hundred forty-five million, five hundred forty-two thousand, eight hundred twenty-three".