218160386120 has 32 divisors (see below), whose sum is σ = 497584996920. Its totient is φ = 86068753920.

The previous prime is 218160386099. The next prime is 218160386131. The reversal of 218160386120 is 21683061812.

It can be written as a sum of positive squares in 4 ways, for example, as 213652875076 + 4507511044 = 462226^2 + 67138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37353311 + ... + 37359150.

Almost surely, 2^218160386120 is an apocalyptic number.

218160386120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218160386120 is an abundant number, since it is smaller than the sum of its proper divisors (279424610800).

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

218160386120 is a wasteful number, since it uses less digits than its factorization.

218160386120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74712545 (or 74712541 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 218160386120 in words is "two hundred eighteen billion, one hundred sixty million, three hundred eighty-six thousand, one hundred twenty".