218076866672 has 40 divisors (see below), whose sum is σ = 482943006336. Its totient is φ = 93450188736.

The previous prime is 218076866671. The next prime is 218076866797. The reversal of 218076866672 is 276668670812.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218076866671) 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 7 ways as a sum of consecutive naturals, for example, 845363 + ... + 1072749.

Almost surely, 2^218076866672 is an apocalyptic number.

It is an amenable number.

218076866672 is an abundant number, since it is smaller than the sum of its proper divisors (264866139664).

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

218076866672 is a wasteful number, since it uses less digits than its factorization.

218076866672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235965 (or 235959 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 218076866672 in words is "two hundred eighteen billion, seventy-six million, eight hundred sixty-six thousand, six hundred seventy-two".