213461538885 has 24 divisors (see below), whose sum is σ = 422857144320. Its totient is φ = 97582417632.

The previous prime is 213461538869. The next prime is 213461538889. The reversal of 213461538885 is 588835164312.

213461538885 is a `hidden beast` number, since 2 + 13 + 4 + 615 + 3 + 8 + 8 + 8 + 5 = 666.

It is not a de Polignac number, because 213461538885 - 2⁴ = 213461538869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213461538889) 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 23 ways as a sum of consecutive naturals, for example, 338827525 + ... + 338828154.

It is an arithmetic number, because the mean of its divisors is an integer number (17619047680).

Almost surely, 2^213461538885 is an apocalyptic number.

It is an amenable number.

213461538885 is a deficient number, since it is larger than the sum of its proper divisors (209395605435).

213461538885 is a wasteful number, since it uses less digits than its factorization.

213461538885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677655697 (or 677655694 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 213461538885 in words is "two hundred thirteen billion, four hundred sixty-one million, five hundred thirty-eight thousand, eight hundred eighty-five".