23145044503 has 12 divisors (see below), whose sum is σ = 28340871960. Its totient is φ = 18794471472.

The previous prime is 23145044497. The next prime is 23145044543. The reversal of 23145044503 is 30544054132.

It is a de Polignac number, because none of the positive numbers 2^k-23145044503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145044543) 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, 12429276 + ... + 12431137.

It is an arithmetic number, because the mean of its divisors is an integer number (2361739330).

Almost surely, 2^23145044503 is an apocalyptic number.

23145044503 is a deficient number, since it is larger than the sum of its proper divisors (5195827457).

23145044503 is a wasteful number, since it uses less digits than its factorization.

23145044503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24860446 (or 24860439 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 23145044503 its reverse (30544054132), we get a palindrome (53689098635).

The spelling of 23145044503 in words is "twenty-three billion, one hundred forty-five million, forty-four thousand, five hundred three".