218480142906 has 48 divisors (see below), whose sum is σ = 475234914024. Its totient is φ = 72540536832.

The previous prime is 218480142901. The next prime is 218480142931. The reversal of 218480142906 is 609241084812.

218480142906 is a `hidden beast` number, since 21 + 8 + 480 + 142 + 9 + 0 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 167309631225 + 51170511681 = 409035^2 + 226209^2 .

It is not an unprimeable number, because it can be changed into a prime (218480142901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23294890 + ... + 23304266.

Almost surely, 2^218480142906 is an apocalyptic number.

218480142906 is an abundant number, since it is smaller than the sum of its proper divisors (256754771118).

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

218480142906 is a wasteful number, since it uses less digits than its factorization.

218480142906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14335 (or 14332 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 218480142906 in words is "two hundred eighteen billion, four hundred eighty million, one hundred forty-two thousand, nine hundred six".