220644747060 has 48 divisors (see below), whose sum is σ = 627026277696. Its totient is φ = 57960410112.

The previous prime is 220644746989. The next prime is 220644747067. The reversal of 220644747060 is 60747446022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220644747067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27439357 + ... + 27447396.

It is an arithmetic number, because the mean of its divisors is an integer number (13063047452).

Almost surely, 2^220644747060 is an apocalyptic number.

220644747060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220644747060 is an abundant number, since it is smaller than the sum of its proper divisors (406381530636).

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

220644747060 is a wasteful number, since it uses less digits than its factorization.

220644747060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54886832 (or 54886830 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 42.

The spelling of 220644747060 in words is "two hundred twenty billion, six hundred forty-four million, seven hundred forty-seven thousand, sixty".