23355685728 has 36 divisors (see below), whose sum is σ = 66417732108. Its totient is φ = 7785228480.

The previous prime is 23355685693. The next prime is 23355685729. The reversal of 23355685728 is 82758655332.

23355685728 is a `hidden beast` number, since 2 + 3 + 3 + 5 + 5 + 68 + 572 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23355685729) 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 5 ways as a sum of consecutive naturals, for example, 40547778 + ... + 40548353.

It is an arithmetic number, because the mean of its divisors is an integer number (1844937003).

Almost surely, 2^23355685728 is an apocalyptic number.

It is an amenable number.

23355685728 is an abundant number, since it is smaller than the sum of its proper divisors (43062046380).

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

23355685728 is a wasteful number, since it uses less digits than its factorization.

23355685728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81096147 (or 81096136 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 23355685728 in words is "twenty-three billion, three hundred fifty-five million, six hundred eighty-five thousand, seven hundred twenty-eight".