523020623220 has 36 divisors (see below), whose sum is σ = 1586495890980. Its totient is φ = 139472166144.

The previous prime is 523020623219. The next prime is 523020623227. The reversal of 523020623220 is 22326020325.

523020623220 is a `hidden beast` number, since 5 + 2 + 30 + 2 + 0 + 623 + 2 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 91032544656 + 431988078564 = 301716^2 + 657258^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523020623227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1452834885 + ... + 1452835244.

It is an arithmetic number, because the mean of its divisors is an integer number (44069330305).

Almost surely, 2^523020623220 is an apocalyptic number.

It is an amenable number.

523020623220 is an abundant number, since it is smaller than the sum of its proper divisors (1063475267760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523020623220 is a wasteful number, since it uses less digits than its factorization.

523020623220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905670144 (or 2905670139 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 523020623220 its reverse (22326020325), we get a palindrome (545346643545).

The spelling of 523020623220 in words is "five hundred twenty-three billion, twenty million, six hundred twenty-three thousand, two hundred twenty".