23428818849409 has 4 divisors (see below), whose sum is σ = 23482926976516. Its totient is φ = 23374710722304.

The previous prime is 23428818849367. The next prime is 23428818849413. The reversal of 23428818849409 is 90494881882432.

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 13246797348225 + 10182021501184 = 3639615^2 + 3190928^2 .

It is a cyclic number.

It is not a de Polignac number, because 23428818849409 - 2⁷ = 23428818849281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23428818849109) 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, 27054062904 + ... + 27054063769.

It is an arithmetic number, because the mean of its divisors is an integer number (5870731744129).

Almost surely, 2^{23428818849409} is an apocalyptic number.

It is an amenable number.

23428818849409 is a deficient number, since it is larger than the sum of its proper divisors (54108127107).

23428818849409 is an equidigital number, since it uses as much as digits as its factorization.

23428818849409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54108127106.

The product of its (nonzero) digits is 254803968, while the sum is 70.

The spelling of 23428818849409 in words is "twenty-three trillion, four hundred twenty-eight billion, eight hundred eighteen million, eight hundred forty-nine thousand, four hundred nine".