23145044554 has 4 divisors (see below), whose sum is σ = 34717566834. Its totient is φ = 11572522276.

The previous prime is 23145044551. The next prime is 23145044561. The reversal of 23145044554 is 45544054132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16071393529 + 7073651025 = 126773^2 + 84105^2 .

It is not an unprimeable number, because it can be changed into a prime (23145044551) 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 as a sum of consecutive naturals, namely, 5786261137 + ... + 5786261140.

Almost surely, 2^23145044554 is an apocalyptic number.

23145044554 is a deficient number, since it is larger than the sum of its proper divisors (11572522280).

23145044554 is a wasteful number, since it uses less digits than its factorization.

23145044554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11572522279.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 23145044554 its reverse (45544054132), we get a palindrome (68689098686).

The spelling of 23145044554 in words is "twenty-three billion, one hundred forty-five million, forty-four thousand, five hundred fifty-four".