220351344920 has 64 divisors (see below), whose sum is σ = 571079393280. Its totient is φ = 74954146176.

The previous prime is 220351344893. The next prime is 220351344959. The reversal of 220351344920 is 29443153022.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

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, 3062744 + ... + 3133863.

It is an arithmetic number, because the mean of its divisors is an integer number (8923115520).

Almost surely, 2^220351344920 is an apocalyptic number.

220351344920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220351344920 is an abundant number, since it is smaller than the sum of its proper divisors (350728048360).

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

220351344920 is a wasteful number, since it uses less digits than its factorization.

220351344920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6196752 (or 6196748 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 220351344920 its reverse (29443153022), we get a palindrome (249794497942).

The spelling of 220351344920 in words is "two hundred twenty billion, three hundred fifty-one million, three hundred forty-four thousand, nine hundred twenty".