218587676964 has 24 divisors (see below), whose sum is σ = 521899260960. Its totient is φ = 71168080704.

The previous prime is 218587676893. The next prime is 218587677013. The reversal of 218587676964 is 469676785812.

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 7 ways as a sum of consecutive naturals, for example, 211809249 + ... + 211810280.

It is an arithmetic number, because the mean of its divisors is an integer number (21745802540).

Almost surely, 2^218587676964 is an apocalyptic number.

It is an amenable number.

218587676964 is an abundant number, since it is smaller than the sum of its proper divisors (303311583996).

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

218587676964 is a wasteful number, since it uses less digits than its factorization.

218587676964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423619579 (or 423619577 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 69.

The spelling of 218587676964 in words is "two hundred eighteen billion, five hundred eighty-seven million, six hundred seventy-six thousand, nine hundred sixty-four".