23563506545 has 16 divisors (see below), whose sum is σ = 30059138880. Its totient is φ = 17681832000.

The previous prime is 23563506529. The next prime is 23563506569. The reversal of 23563506545 is 54560536532.

It is not a de Polignac number, because 23563506545 - 2⁴ = 23563506529 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23563506496 and 23563506505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218311 + ... + 1237500.

It is an arithmetic number, because the mean of its divisors is an integer number (1878696180).

Almost surely, 2^23563506545 is an apocalyptic number.

It is an amenable number.

23563506545 is a deficient number, since it is larger than the sum of its proper divisors (6495632335).

23563506545 is a wasteful number, since it uses less digits than its factorization.

23563506545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455936.

The product of its (nonzero) digits is 1620000, while the sum is 44.

The spelling of 23563506545 in words is "twenty-three billion, five hundred sixty-three million, five hundred six thousand, five hundred forty-five".