220668742872 has 48 divisors (see below), whose sum is σ = 597699297000. Its totient is φ = 73549504896.

The previous prime is 220668742823. The next prime is 220668742883. The reversal of 220668742872 is 278247866022.

220668742872 is a `hidden beast` number, since 2 + 206 + 6 + 8 + 7 + 428 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683779 + ... + 953357.

Almost surely, 2^220668742872 is an apocalyptic number.

It is an amenable number.

220668742872 is an abundant number, since it is smaller than the sum of its proper divisors (377030554128).

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

220668742872 is a wasteful number, since it uses less digits than its factorization.

220668742872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280960 (or 280953 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 220668742872 in words is "two hundred twenty billion, six hundred sixty-eight million, seven hundred forty-two thousand, eight hundred seventy-two".