23205985236 has 72 divisors (see below), whose sum is σ = 70567922880. Its totient is φ = 6281318016.

The previous prime is 23205985169. The next prime is 23205985241. The reversal of 23205985236 is 63258950232.

23205985236 is a `hidden beast` number, since 2 + 3 + 2 + 0 + 598 + 52 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 23205985191 and 23205985200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2418561 + ... + 2428136.

It is an arithmetic number, because the mean of its divisors is an integer number (980110040).

Almost surely, 2^23205985236 is an apocalyptic number.

It is an amenable number.

23205985236 is an abundant number, since it is smaller than the sum of its proper divisors (47361937644).

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

23205985236 is a wasteful number, since it uses less digits than its factorization.

23205985236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846733 (or 4846728 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 23205985236 in words is "twenty-three billion, two hundred five million, nine hundred eighty-five thousand, two hundred thirty-six".