2220540616660 has 48 divisors (see below), whose sum is σ = 4733210900880. Its totient is φ = 874957798400.

The previous prime is 2220540616543. The next prime is 2220540616661. The reversal of 2220540616660 is 666160450222.

It can be written as a sum of positive squares in 8 ways, for example, as 1010016960016 + 1210523656644 = 1004996^2 + 1100238^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220540616661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2392105 + ... + 3187984.

It is an arithmetic number, because the mean of its divisors is an integer number (98608560435).

Almost surely, 2^{2220540616660} is an apocalyptic number.

2220540616660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220540616660 is an abundant number, since it is smaller than the sum of its proper divisors (2512670284220).

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

2220540616660 is a wasteful number, since it uses less digits than its factorization.

2220540616660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580396 (or 5580394 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 2220540616660 in words is "two trillion, two hundred twenty billion, five hundred forty million, six hundred sixteen thousand, six hundred sixty".