23564543316 has 12 divisors (see below), whose sum is σ = 54983934432. Its totient is φ = 7854847768.

The previous prime is 23564543297. The next prime is 23564543323. The reversal of 23564543316 is 61334546532.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981855960 + ... + 981855983.

It is an arithmetic number, because the mean of its divisors is an integer number (4581994536).

Almost surely, 2^23564543316 is an apocalyptic number.

It is an amenable number.

23564543316 is an abundant number, since it is smaller than the sum of its proper divisors (31419391116).

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

23564543316 is a wasteful number, since it uses less digits than its factorization.

23564543316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963711950 (or 1963711948 counting only the distinct ones).

The product of its digits is 777600, while the sum is 42.

The spelling of 23564543316 in words is "twenty-three billion, five hundred sixty-four million, five hundred forty-three thousand, three hundred sixteen".