23509205046 has 64 divisors (see below), whose sum is σ = 52982323200. Its totient is φ = 7725751488.

The previous prime is 23509205029. The next prime is 23509205053. The reversal of 23509205046 is 64050290532.

It is a self number, because there is not a number n which added to its sum of digits gives 23509205046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3165930 + ... + 3173346.

It is an arithmetic number, because the mean of its divisors is an integer number (827848800).

Almost surely, 2^23509205046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23509205046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26491161600).

23509205046 is an abundant number, since it is smaller than the sum of its proper divisors (29473118154).

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

23509205046 is a wasteful number, since it uses less digits than its factorization.

23509205046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250 (or 8244 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 23509205046 its reverse (64050290532), we get a palindrome (87559495578).

The spelling of 23509205046 in words is "twenty-three billion, five hundred nine million, two hundred five thousand, forty-six".