23145044556 has 48 divisors (see below), whose sum is σ = 54163081728. Its totient is φ = 7692484800.

The previous prime is 23145044551. The next prime is 23145044561. The reversal of 23145044556 is 65544054132.

It is an interprime number because it is at equal distance from previous prime (23145044551) and next prime (23145044561).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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 in 15 ways as a sum of consecutive naturals, for example, 7224451 + ... + 7227653.

It is an arithmetic number, because the mean of its divisors is an integer number (1128397536).

Almost surely, 2^23145044556 is an apocalyptic number.

It is an amenable number.

23145044556 is an abundant number, since it is smaller than the sum of its proper divisors (31018037172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23145044556 is a wasteful number, since it uses less digits than its factorization.

23145044556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782 (or 4780 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 23145044556 its reverse (65544054132), we get a palindrome (88689098688).

The spelling of 23145044556 in words is "twenty-three billion, one hundred forty-five million, forty-four thousand, five hundred fifty-six".