23405065008 has 80 divisors (see below), whose sum is σ = 65441644800. Its totient is φ = 7165331712.

The previous prime is 23405064961. The next prime is 23405065009. The reversal of 23405065008 is 80056050432.

It is a self number, because there is not a number n which added to its sum of digits gives 23405065008.

It is not an unprimeable number, because it can be changed into a prime (23405065009) 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, 29935 + ... + 218417.

It is an arithmetic number, because the mean of its divisors is an integer number (818020560).

Almost surely, 2^23405065008 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 23405065008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32720822400).

23405065008 is an abundant number, since it is smaller than the sum of its proper divisors (42036579792).

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

23405065008 is a wasteful number, since it uses less digits than its factorization.

23405065008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188706 (or 188700 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 23405065008 in words is "twenty-three billion, four hundred five million, sixty-five thousand, eight".