220684684842 has 40 divisors (see below), whose sum is σ = 494589021696. Its totient is φ = 73547896968.

The previous prime is 220684684837. The next prime is 220684684853. The reversal of 220684684842 is 248486486022.

220684684842 is a `hidden beast` number, since 2 + 20 + 6 + 84 + 68 + 484 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 767713 + ... + 1015259.

Almost surely, 2^220684684842 is an apocalyptic number.

220684684842 is an abundant number, since it is smaller than the sum of its proper divisors (273904336854).

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

220684684842 is a wasteful number, since it uses less digits than its factorization.

220684684842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253064 (or 253055 counting only the distinct ones).

The product of its (nonzero) digits is 9437184, while the sum is 54.

The spelling of 220684684842 in words is "two hundred twenty billion, six hundred eighty-four million, six hundred eighty-four thousand, eight hundred forty-two".