23838147647 has 4 divisors (see below), whose sum is σ = 23839034760. Its totient is φ = 23837260536.

The previous prime is 23838147637. The next prime is 23838147649. The reversal of 23838147647 is 74674183832.

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 23838147647 - 2¹² = 23838143551 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 (23838147649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401948 + ... + 457425.

It is an arithmetic number, because the mean of its divisors is an integer number (5959758690).

Almost surely, 2^23838147647 is an apocalyptic number.

23838147647 is a deficient number, since it is larger than the sum of its proper divisors (887113).

23838147647 is an equidigital number, since it uses as much as digits as its factorization.

23838147647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887112.

The product of its digits is 5419008, while the sum is 53.

The spelling of 23838147647 in words is "twenty-three billion, eight hundred thirty-eight million, one hundred forty-seven thousand, six hundred forty-seven".