23385164399 has 4 divisors (see below), whose sum is σ = 23385770520. Its totient is φ = 23384558280.

The previous prime is 23385164347. The next prime is 23385164441. The reversal of 23385164399 is 99346158332.

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 23385164399 - 2¹² = 23385160303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23385164399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23385164339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240944 + ... + 323765.

It is an arithmetic number, because the mean of its divisors is an integer number (5846442630).

Almost surely, 2^23385164399 is an apocalyptic number.

23385164399 is a deficient number, since it is larger than the sum of its proper divisors (606121).

23385164399 is an equidigital number, since it uses as much as digits as its factorization.

23385164399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606120.

The product of its digits is 4199040, while the sum is 53.

The spelling of 23385164399 in words is "twenty-three billion, three hundred eighty-five million, one hundred sixty-four thousand, three hundred ninety-nine".