23548366721 has 6 divisors (see below), whose sum is σ = 25883742066. Its totient is φ = 21407606000.

The previous prime is 23548366717. The next prime is 23548366747. The reversal of 23548366721 is 12766384532.

It can be written as a sum of positive squares in only one way, i.e., 23543526721 + 4840000 = 153439^2 + 2200^2 .

It is not a de Polignac number, because 23548366721 - 2² = 23548366717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23548356721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97307180 + ... + 97307421.

It is an arithmetic number, because the mean of its divisors is an integer number (4313957011).

Almost surely, 2^23548366721 is an apocalyptic number.

It is an amenable number.

23548366721 is a deficient number, since it is larger than the sum of its proper divisors (2335375345).

23548366721 is a wasteful number, since it uses less digits than its factorization.

23548366721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194614623 (or 194614612 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 47.

The spelling of 23548366721 in words is "twenty-three billion, five hundred forty-eight million, three hundred sixty-six thousand, seven hundred twenty-one".