23403403444145 has 4 divisors (see below), whose sum is σ = 28084084132980. Its totient is φ = 18722722755312.

The previous prime is 23403403444129. The next prime is 23403403444181. The reversal of 23403403444145 is 54144430430432.

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 12976471630369 + 10426931813776 = 3602287^2 + 3229076^2 .

It is a cyclic number.

It is not a de Polignac number, because 23403403444145 - 2⁴ = 23403403444129 is a prime.

It is an unprimeable number.

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, 2340340344410 + ... + 2340340344419.

It is an arithmetic number, because the mean of its divisors is an integer number (7021021033245).

Almost surely, 2^{23403403444145} is an apocalyptic number.

It is an amenable number.

23403403444145 is a deficient number, since it is larger than the sum of its proper divisors (4680680688835).

23403403444145 is an equidigital number, since it uses as much as digits as its factorization.

23403403444145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680680688834.

The product of its (nonzero) digits is 1105920, while the sum is 41.

Adding to 23403403444145 its reverse (54144430430432), we get a palindrome (77547833874577).

The spelling of 23403403444145 in words is "twenty-three trillion, four hundred three billion, four hundred three million, four hundred forty-four thousand, one hundred forty-five".