523112968385569 has 3 divisors (see below), whose sum is σ = 523112991257233. Its totient is φ = 523112945513906.

The previous prime is 523112968385473. The next prime is 523112968385633. The reversal of 523112968385569 is 965583869211325.

The square root of 523112968385569 is 22871663.

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 is not a de Polignac number, because 523112968385569 - 2¹⁵ = 523112968352801 is a prime.

It is a super-2 number, since 2×523112968385569² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523112968385669) 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, 11435832 + ... + 34307494.

Almost surely, 2^{523112968385569} is an apocalyptic number.

523112968385569 is the 22871663-rd square number.

523112968385569 is the 11435832-nd centered octagonal number.

It is an amenable number.

523112968385569 is a deficient number, since it is larger than the sum of its proper divisors (22871664).

523112968385569 is an frugal number, since it uses more digits than its factorization.

523112968385569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45743326 (or 22871663 counting only the distinct ones).

The product of its digits is 839808000, while the sum is 73.

The spelling of 523112968385569 in words is "five hundred twenty-three trillion, one hundred twelve billion, nine hundred sixty-eight million, three hundred eighty-five thousand, five hundred sixty-nine".