23689211569 has 3 divisors (see below), whose sum is σ = 23689365483. Its totient is φ = 23689057656.

The previous prime is 23689211551. The next prime is 23689211593. The reversal of 23689211569 is 96511298632.

The square root of 23689211569 is 153913.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1282714225 + 22406497344 = 35815^2 + 149688^2 .

It is not a de Polignac number, because 23689211569 - 2²³ = 23680822961 is a prime.

It is a super-2 number, since 2×23689211569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23689211509) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 76957 + ... + 230869.

It is an arithmetic number, because the mean of its divisors is an integer number (7896455161).

Almost surely, 2^23689211569 is an apocalyptic number.

23689211569 is the 153913-rd square number.

23689211569 is the 76957-th centered octagonal number.

It is an amenable number.

23689211569 is a deficient number, since it is larger than the sum of its proper divisors (153914).

23689211569 is an frugal number, since it uses more digits than its factorization.

23689211569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307826 (or 153913 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The spelling of 23689211569 in words is "twenty-three billion, six hundred eighty-nine million, two hundred eleven thousand, five hundred sixty-nine".