220666685740 has 48 divisors (see below), whose sum is σ = 479684177280. Its totient is φ = 85168805120.

The previous prime is 220666685713. The next prime is 220666685761. The reversal of 220666685740 is 47586666022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797970 + ... + 1038310.

It is an arithmetic number, because the mean of its divisors is an integer number (9993420360).

Almost surely, 2^220666685740 is an apocalyptic number.

220666685740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220666685740 is an abundant number, since it is smaller than the sum of its proper divisors (259017491540).

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

220666685740 is a wasteful number, since it uses less digits than its factorization.

220666685740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241962 (or 241960 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 220666685740 in words is "two hundred twenty billion, six hundred sixty-six million, six hundred eighty-five thousand, seven hundred forty".