23016336561 has 12 divisors (see below), whose sum is σ = 33250268688. Its totient is φ = 15342170904.

The previous prime is 23016336557. The next prime is 23016336569. The reversal of 23016336561 is 16563361032.

23016336561 is a `hidden beast` number, since 2 + 3 + 0 + 1 + 63 + 36 + 561 = 666.

It is not a de Polignac number, because 23016336561 - 2² = 23016336557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23016336569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98515 + ... + 236088.

It is an arithmetic number, because the mean of its divisors is an integer number (2770855724).

Almost surely, 2^23016336561 is an apocalyptic number.

It is an amenable number.

23016336561 is a deficient number, since it is larger than the sum of its proper divisors (10233932127).

23016336561 is a wasteful number, since it uses less digits than its factorization.

23016336561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342252 (or 342249 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

Adding to 23016336561 its reverse (16563361032), we get a palindrome (39579697593).

The spelling of 23016336561 in words is "twenty-three billion, sixteen million, three hundred thirty-six thousand, five hundred sixty-one".