23201205869 has 2 divisors, whose sum is σ = 23201205870. Its totient is φ = 23201205868.

The previous prime is 23201205847. The next prime is 23201205887. The reversal of 23201205869 is 96850210232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23190721225 + 10484644 = 152285^2 + 3238^2 .

It is a cyclic number.

It is not a de Polignac number, because 23201205869 - 2¹² = 23201201773 is a prime.

It is a super-2 number, since 2×23201205869² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23201201869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600602934 + 11600602935.

It is an arithmetic number, because the mean of its divisors is an integer number (11600602935).

Almost surely, 2^23201205869 is an apocalyptic number.

It is an amenable number.

23201205869 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201205869 is an equidigital number, since it uses as much as digits as its factorization.

23201205869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 23201205869 in words is "twenty-three billion, two hundred one million, two hundred five thousand, eight hundred sixty-nine".