23305144447 has 12 divisors (see below), whose sum is σ = 25255295640. Its totient is φ = 21495777888.

The previous prime is 23305144411. The next prime is 23305144463. The reversal of 23305144447 is 74444150332.

It is not a de Polignac number, because 23305144447 - 2¹⁵ = 23305111679 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 (23305144477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168129 + ... + 273637.

It is an arithmetic number, because the mean of its divisors is an integer number (2104607970).

Almost surely, 2^23305144447 is an apocalyptic number.

23305144447 is a deficient number, since it is larger than the sum of its proper divisors (1950151193).

23305144447 is a wasteful number, since it uses less digits than its factorization.

23305144447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106842 (or 106829 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 37.

Adding to 23305144447 its reverse (74444150332), we get a palindrome (97749294779).

The spelling of 23305144447 in words is "twenty-three billion, three hundred five million, one hundred forty-four thousand, four hundred forty-seven".