220164418956 has 24 divisors (see below), whose sum is σ = 513729503280. Its totient is φ = 73386350272.

The previous prime is 220164418949. The next prime is 220164419021. The reversal of 220164418956 is 659814461022.

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, 347290 + ... + 748958.

It is an arithmetic number, because the mean of its divisors is an integer number (21405395970).

Almost surely, 2^220164418956 is an apocalyptic number.

It is an amenable number.

220164418956 is an abundant number, since it is smaller than the sum of its proper divisors (293565084324).

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

220164418956 is a wasteful number, since it uses less digits than its factorization.

220164418956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447353 (or 447351 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

Adding to 220164418956 its reverse (659814461022), we get a palindrome (879978879978).

The spelling of 220164418956 in words is "two hundred twenty billion, one hundred sixty-four million, four hundred eighteen thousand, nine hundred fifty-six".