220520221740 has 1152 divisors, whose sum is σ = 922206781440. Its totient is φ = 42550272000.

The previous prime is 220520221729. The next prime is 220520221769. The reversal of 220520221740 is 47122025022.

220520221740 is a `hidden beast` number, since 2 + 205 + 202 + 217 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 549925540 + ... + 549925940.

It is an arithmetic number, because the mean of its divisors is an integer number (800526720).

Almost surely, 2^220520221740 is an apocalyptic number.

220520221740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220520221740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461103390720).

220520221740 is an abundant number, since it is smaller than the sum of its proper divisors (701686559700).

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

220520221740 is a wasteful number, since it uses less digits than its factorization.

220520221740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

Adding to 220520221740 its reverse (47122025022), we get a palindrome (267642246762).

The spelling of 220520221740 in words is "two hundred twenty billion, five hundred twenty million, two hundred twenty-one thousand, seven hundred forty".