23181451648 has 16 divisors (see below), whose sum is σ = 46181798460. Its totient is φ = 11590725760.

The previous prime is 23181451637. The next prime is 23181451673. The reversal of 23181451648 is 84615418132.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90552418 + ... + 90552673.

Almost surely, 2^23181451648 is an apocalyptic number.

It is an amenable number.

23181451648 is a deficient number, since it is larger than the sum of its proper divisors (23000346812).

23181451648 is an equidigital number, since it uses as much as digits as its factorization.

23181451648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181105105 (or 181105093 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The spelling of 23181451648 in words is "twenty-three billion, one hundred eighty-one million, four hundred fifty-one thousand, six hundred forty-eight".