23004440145 has 24 divisors (see below), whose sum is σ = 40083144192. Its totient is φ = 12204794400.

The previous prime is 23004440117. The next prime is 23004440149. The reversal of 23004440145 is 54104440032.

It is a happy number.

It is not a de Polignac number, because 23004440145 - 2⁸ = 23004439889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23004440149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1329651 + ... + 1346840.

It is an arithmetic number, because the mean of its divisors is an integer number (1670131008).

Almost surely, 2^23004440145 is an apocalyptic number.

It is an amenable number.

23004440145 is a deficient number, since it is larger than the sum of its proper divisors (17078704047).

23004440145 is a wasteful number, since it uses less digits than its factorization.

23004440145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676693 (or 2676690 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 23004440145 its reverse (54104440032), we get a palindrome (77108880177).

The spelling of 23004440145 in words is "twenty-three billion, four million, four hundred forty thousand, one hundred forty-five".