523516523121 has 12 divisors (see below), whose sum is σ = 759581525248. Its totient is φ = 347445942264.

The previous prime is 523516523113. The next prime is 523516523261. The reversal of 523516523121 is 121325615325.

523516523121 is a `hidden beast` number, since 5 + 2 + 3 + 5 + 1 + 6 + 523 + 121 = 666.

It is not a de Polignac number, because 523516523121 - 2³ = 523516523113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523516523111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130420645 + ... + 130424658.

Almost surely, 2^523516523121 is an apocalyptic number.

It is an amenable number.

523516523121 is a deficient number, since it is larger than the sum of its proper divisors (236065002127).

523516523121 is a wasteful number, since it uses less digits than its factorization.

523516523121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260845532 (or 260845529 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The spelling of 523516523121 in words is "five hundred twenty-three billion, five hundred sixteen million, five hundred twenty-three thousand, one hundred twenty-one".