220255510340440 has 32 divisors (see below), whose sum is σ = 495575477480160. Its totient is φ = 88102101164800.

The previous prime is 220255510340417. The next prime is 220255510340447. The reversal of 220255510340440 is 44043015552022.

It is a self number, because there is not a number n which added to its sum of digits gives 220255510340440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220255510340447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37929780 + ... + 43349500.

It is an arithmetic number, because the mean of its divisors is an integer number (15486733671255).

Almost surely, 2^{220255510340440} is an apocalyptic number.

220255510340440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220255510340440 is an abundant number, since it is smaller than the sum of its proper divisors (275319967139720).

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

220255510340440 is a wasteful number, since it uses less digits than its factorization.

220255510340440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6435723 (or 6435719 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 220255510340440 its reverse (44043015552022), we get a palindrome (264298525892462).

The spelling of 220255510340440 in words is "two hundred twenty trillion, two hundred fifty-five billion, five hundred ten million, three hundred forty thousand, four hundred forty".