23145405224 has 16 divisors (see below), whose sum is σ = 43403776020. Its totient is φ = 11571064960.

The previous prime is 23145405221. The next prime is 23145405263. The reversal of 23145405224 is 42250454132.

It can be written as a sum of positive squares in 2 ways, for example, as 22655668324 + 489736900 = 150518^2 + 22130^2 .

It is not an unprimeable number, because it can be changed into a prime (23145405221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143567 + ... + 258654.

Almost surely, 2^23145405224 is an apocalyptic number.

It is an amenable number.

23145405224 is a deficient number, since it is larger than the sum of its proper divisors (20258370796).

23145405224 is a wasteful number, since it uses less digits than its factorization.

23145405224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409420 (or 409416 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 23145405224 its reverse (42250454132), we get a palindrome (65395859356).

The spelling of 23145405224 in words is "twenty-three billion, one hundred forty-five million, four hundred five thousand, two hundred twenty-four".