23043821856 has 96 divisors (see below), whose sum is σ = 66029499648. Its totient is φ = 6978704640.

The previous prime is 23043821837. The next prime is 23043821891. The reversal of 23043821856 is 65812834032.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2008071 + ... + 2019513.

It is an arithmetic number, because the mean of its divisors is an integer number (687807288).

Almost surely, 2^23043821856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23043821856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33014749824).

23043821856 is an abundant number, since it is smaller than the sum of its proper divisors (42985677792).

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

23043821856 is a wasteful number, since it uses less digits than its factorization.

23043821856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13374 (or 13366 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 23043821856 in words is "twenty-three billion, forty-three million, eight hundred twenty-one thousand, eight hundred fifty-six".