213256654272 has 84 divisors (see below), whose sum is σ = 630979866816. Its totient is φ = 68792463360.

The previous prime is 213256654181. The next prime is 213256654291. The reversal of 213256654272 is 272456652312.

213256654272 is a `hidden beast` number, since 2 + 1 + 32 + 5 + 6 + 6 + 542 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5953713 + ... + 5989424.

Almost surely, 2^213256654272 is an apocalyptic number.

It is an amenable number.

213256654272 is an abundant number, since it is smaller than the sum of its proper divisors (417723212544).

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

213256654272 is a wasteful number, since it uses less digits than its factorization.

213256654272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11943186 (or 11943173 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 213256654272 in words is "two hundred thirteen billion, two hundred fifty-six million, six hundred fifty-four thousand, two hundred seventy-two".