538855085889 has 12 divisors (see below), whose sum is σ = 778361605476. Its totient is φ = 359229629952.

The previous prime is 538855085851. The next prime is 538855085897. The reversal of 538855085889 is 988580558835.

538855085889 is a `hidden beast` number, since 5 + 38 + 8 + 5 + 5 + 0 + 8 + 588 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 240119600400 + 298735485489 = 490020^2 + 546567^2 .

It is not a de Polignac number, because 538855085889 - 2²⁰ = 538854037313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (538855085819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87504 + ... + 1041809.

It is an arithmetic number, because the mean of its divisors is an integer number (64863467123).

Almost surely, 2^538855085889 is an apocalyptic number.

It is an amenable number.

538855085889 is a deficient number, since it is larger than the sum of its proper divisors (239506519587).

538855085889 is a wasteful number, since it uses less digits than its factorization.

538855085889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182336 (or 1182333 counting only the distinct ones).

The product of its (nonzero) digits is 552960000, while the sum is 72.

The spelling of 538855085889 in words is "five hundred thirty-eight billion, eight hundred fifty-five million, eighty-five thousand, eight hundred eighty-nine".