23207563561 has 8 divisors (see below), whose sum is σ = 28563155264. Its totient is φ = 18362028240.

The previous prime is 23207563501. The next prime is 23207563607. The reversal of 23207563561 is 16536570232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23207563561 - 2¹¹ = 23207561513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23207563501) 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 7 ways as a sum of consecutive naturals, for example, 127513995 + ... + 127514176.

It is an arithmetic number, because the mean of its divisors is an integer number (3570394408).

Almost surely, 2^23207563561 is an apocalyptic number.

It is an amenable number.

23207563561 is a deficient number, since it is larger than the sum of its proper divisors (5355591703).

23207563561 is a wasteful number, since it uses less digits than its factorization.

23207563561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255028191.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 23207563561 in words is "twenty-three billion, two hundred seven million, five hundred sixty-three thousand, five hundred sixty-one".