23505645928 has 8 divisors (see below), whose sum is σ = 44073086130. Its totient is φ = 11752822960.

The previous prime is 23505645923. The next prime is 23505645949. The reversal of 23505645928 is 82954650532.

It can be written as a sum of positive squares in only one way, i.e., 11819603524 + 11686042404 = 108718^2 + 108102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (23505645923) 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, 1469102863 + ... + 1469102878.

Almost surely, 2^23505645928 is an apocalyptic number.

It is an amenable number.

23505645928 is a deficient number, since it is larger than the sum of its proper divisors (20567440202).

23505645928 is a wasteful number, since it uses less digits than its factorization.

23505645928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938205747 (or 2938205743 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 23505645928 in words is "twenty-three billion, five hundred five million, six hundred forty-five thousand, nine hundred twenty-eight".