218407063768 has 16 divisors (see below), whose sum is σ = 410001354000. Its totient is φ = 109073369376.

The previous prime is 218407063753. The next prime is 218407063801. The reversal of 218407063768 is 867360704812.

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 3 ways as a sum of consecutive naturals, for example, 16263183 + ... + 16276606.

It is an arithmetic number, because the mean of its divisors is an integer number (25625084625).

Almost surely, 2^218407063768 is an apocalyptic number.

It is an amenable number.

218407063768 is a deficient number, since it is larger than the sum of its proper divisors (191594290232).

218407063768 is a wasteful number, since it uses less digits than its factorization.

218407063768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32540634 (or 32540630 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 218407063768 in words is "two hundred eighteen billion, four hundred seven million, sixty-three thousand, seven hundred sixty-eight".