220644863452 has 18 divisors (see below), whose sum is σ = 418115489568. Its totient is φ = 101836090512.

The previous prime is 220644863437. The next prime is 220644863503. The reversal of 220644863452 is 254368446022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163198188 + ... + 163199539.

Almost surely, 2^220644863452 is an apocalyptic number.

It is an amenable number.

220644863452 is a deficient number, since it is larger than the sum of its proper divisors (197470626116).

220644863452 is a wasteful number, since it uses less digits than its factorization.

220644863452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326397757 (or 326397742 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 46.

The spelling of 220644863452 in words is "two hundred twenty billion, six hundred forty-four million, eight hundred sixty-three thousand, four hundred fifty-two".