23788386653 has 4 divisors (see below), whose sum is σ = 24431316060. Its totient is φ = 23145457248.

The previous prime is 23788386647. The next prime is 23788386781. The reversal of 23788386653 is 35668388732.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21668428804 + 2119957849 = 147202^2 + 46043^2 .

It is a cyclic number.

It is not a de Polignac number, because 23788386653 - 2⁸ = 23788386397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23788386592 and 23788386601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23788386613) 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, 321464648 + ... + 321464721.

It is an arithmetic number, because the mean of its divisors is an integer number (6107829015).

Almost surely, 2^23788386653 is an apocalyptic number.

It is an amenable number.

23788386653 is a deficient number, since it is larger than the sum of its proper divisors (642929407).

23788386653 is an equidigital number, since it uses as much as digits as its factorization.

23788386653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642929406.

The product of its digits is 34836480, while the sum is 59.

The spelling of 23788386653 in words is "twenty-three billion, seven hundred eighty-eight million, three hundred eighty-six thousand, six hundred fifty-three".