523388539386 has 96 divisors (see below), whose sum is σ = 1189667763648. Its totient is φ = 172441198080.

The previous prime is 523388539361. The next prime is 523388539417. The reversal of 523388539386 is 683935883325.

523388539386 is a `hidden beast` number, since 5 + 233 + 8 + 8 + 5 + 393 + 8 + 6 = 666.

It is a super-3 number, since 3×523388539386³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 38696821 + ... + 38710343.

It is an arithmetic number, because the mean of its divisors is an integer number (12392372538).

Almost surely, 2^523388539386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523388539386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594833881824).

523388539386 is an abundant number, since it is smaller than the sum of its proper divisors (666279224262).

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

523388539386 is a wasteful number, since it uses less digits than its factorization.

523388539386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14458 (or 14446 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 63.

The spelling of 523388539386 in words is "five hundred twenty-three billion, three hundred eighty-eight million, five hundred thirty-nine thousand, three hundred eighty-six".