23536775889 has 27 divisors (see below), whose sum is σ = 37377264379. Its totient is φ = 14261644320.

The previous prime is 23536775881. The next prime is 23536775903. The reversal of 23536775889 is 98857763532.

The square root of 23536775889 is 153417.

It is a perfect power (a square), and thus also a powerful number.

23536775889 is a `hidden beast` number, since 23 + 536 + 7 + 75 + 8 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23033222289 + 503553600 = 151767^2 + 22440^2 .

It is not a de Polignac number, because 23536775889 - 2³ = 23536775881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23536775881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5060437 + ... + 5065085.

Almost surely, 2^23536775889 is an apocalyptic number.

23536775889 is the 153417-th square number.

23536775889 is the 76709-th centered octagonal number.

It is an amenable number.

23536775889 is a deficient number, since it is larger than the sum of its proper divisors (13840488490).

23536775889 is an frugal number, since it uses more digits than its factorization.

23536775889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9326 (or 4663 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 23536775889 in words is "twenty-three billion, five hundred thirty-six million, seven hundred seventy-five thousand, eight hundred eighty-nine".