23227504561 has 2 divisors, whose sum is σ = 23227504562. Its totient is φ = 23227504560.

The previous prime is 23227504507. The next prime is 23227504607. The reversal of 23227504561 is 16540572232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18361605025 + 4865899536 = 135505^2 + 69756^2 .

It is a cyclic number.

It is not a de Polignac number, because 23227504561 - 2¹¹ = 23227502513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23227504561.

It is not a weakly prime, because it can be changed into another prime (23227504361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11613752280 + 11613752281.

It is an arithmetic number, because the mean of its divisors is an integer number (11613752281).

Almost surely, 2^23227504561 is an apocalyptic number.

It is an amenable number.

23227504561 is a deficient number, since it is larger than the sum of its proper divisors (1).

23227504561 is an equidigital number, since it uses as much as digits as its factorization.

23227504561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 23227504561 in words is "twenty-three billion, two hundred twenty-seven million, five hundred four thousand, five hundred sixty-one".