212873510853 has 12 divisors (see below), whose sum is σ = 308214331308. Its totient is φ = 141578579520.

The previous prime is 212873510819. The next prime is 212873510903. The reversal of 212873510853 is 358015378212.

212873510853 is a `hidden beast` number, since 2 + 1 + 2 + 87 + 3 + 510 + 8 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50772256929 + 162101253924 = 225327^2 + 402618^2 .

It is not a de Polignac number, because 212873510853 - 2²² = 212869316549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212873510799 and 212873510808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212873510803) 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, 28087200 + ... + 28094777.

It is an arithmetic number, because the mean of its divisors is an integer number (25684527609).

Almost surely, 2^212873510853 is an apocalyptic number.

It is an amenable number.

212873510853 is a deficient number, since it is larger than the sum of its proper divisors (95340820455).

212873510853 is a wasteful number, since it uses less digits than its factorization.

212873510853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56182404 (or 56182401 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 212873510853 in words is "two hundred twelve billion, eight hundred seventy-three million, five hundred ten thousand, eight hundred fifty-three".