218994721676 has 12 divisors (see below), whose sum is σ = 384345205608. Its totient is φ = 109181805792.

The previous prime is 218994721669. The next prime is 218994721727. The reversal of 218994721676 is 676127499812.

218994721676 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 3 ways as a sum of consecutive naturals, for example, 78887201 + ... + 78889976.

It is an arithmetic number, because the mean of its divisors is an integer number (32028767134).

Almost surely, 2^218994721676 is an apocalyptic number.

It is an amenable number.

218994721676 is a deficient number, since it is larger than the sum of its proper divisors (165350483932).

218994721676 is a wasteful number, since it uses less digits than its factorization.

218994721676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157777528 (or 157777526 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 62.

The spelling of 218994721676 in words is "two hundred eighteen billion, nine hundred ninety-four million, seven hundred twenty-one thousand, six hundred seventy-six".