23661310236 has 24 divisors (see below), whose sum is σ = 55265462784. Its totient is φ = 7879140720.

The previous prime is 23661310193. The next prime is 23661310307. The reversal of 23661310236 is 63201316632.

It is a junction number, because it is equal to n+sod(n) for n = 23661310197 and 23661310206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982950 + ... + 1006733.

It is an arithmetic number, because the mean of its divisors is an integer number (2302727616).

Almost surely, 2^23661310236 is an apocalyptic number.

It is an amenable number.

23661310236 is an abundant number, since it is smaller than the sum of its proper divisors (31604152548).

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

23661310236 is a wasteful number, since it uses less digits than its factorization.

23661310236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990681 (or 1990679 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 33.

Adding to 23661310236 its reverse (63201316632), we get a palindrome (86862626868).

The spelling of 23661310236 in words is "twenty-three billion, six hundred sixty-one million, three hundred ten thousand, two hundred thirty-six".