213234859656 has 96 divisors (see below), whose sum is σ = 710782887360. Its totient is φ = 56237763456.

The previous prime is 213234859637. The next prime is 213234859687. The reversal of 213234859656 is 656958432312.

It is a happy number.

213234859656 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 3 + 48 + 596 + 5 + 6 = 666.

213234859656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16265950 + ... + 16279053.

It is an arithmetic number, because the mean of its divisors is an integer number (7403988410).

Almost surely, 2^213234859656 is an apocalyptic number.

213234859656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

213234859656 is an abundant number, since it is smaller than the sum of its proper divisors (497548027704).

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

213234859656 is a wasteful number, since it uses less digits than its factorization.

213234859656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32545035 (or 32545028 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 213234859656 in words is "two hundred thirteen billion, two hundred thirty-four million, eight hundred fifty-nine thousand, six hundred fifty-six".