523538356885 has 8 divisors (see below), whose sum is σ = 628287265080. Its totient is φ = 418803194304.

The previous prime is 523538356837. The next prime is 523538356889. The reversal of 523538356885 is 588653835325.

It can be written as a sum of positive squares in 4 ways, for example, as 76012144209 + 447526212676 = 275703^2 + 668974^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 523538356885 - 2¹³ = 523538348693 is a prime.

It is a super-2 number, since 2×523538356885² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523538356889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3352422 + ... + 3505111.

It is an arithmetic number, because the mean of its divisors is an integer number (78535908135).

Almost surely, 2^523538356885 is an apocalyptic number.

It is an amenable number.

523538356885 is a deficient number, since it is larger than the sum of its proper divisors (104748908195).

523538356885 is a wasteful number, since it uses less digits than its factorization.

523538356885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6872807.

The product of its digits is 103680000, while the sum is 61.

The spelling of 523538356885 in words is "five hundred twenty-three billion, five hundred thirty-eight million, three hundred fifty-six thousand, eight hundred eighty-five".