2220660459990 has 384 divisors, whose sum is σ = 6918619069440. Its totient is φ = 483619175424.

The previous prime is 2220660459911. The next prime is 2220660460013. The reversal of 2220660459990 is 999540660222.

It is a happy number.

2220660459990 is a `hidden beast` number, since 2 + 2 + 20 + 6 + 604 + 5 + 9 + 9 + 9 + 0 = 666.

It is a super-3 number, since 3×2220660459990³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 270182101 + ... + 270190319.

It is an arithmetic number, because the mean of its divisors is an integer number (18017237160).

Almost surely, 2^{2220660459990} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2220660459990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3459309534720).

2220660459990 is an abundant number, since it is smaller than the sum of its proper divisors (4697958609450).

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

2220660459990 is a wasteful number, since it uses less digits than its factorization.

2220660459990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516 (or 8513 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 2220660459990 in words is "two trillion, two hundred twenty billion, six hundred sixty million, four hundred fifty-nine thousand, nine hundred ninety".