2216660663040 has 72 divisors (see below), whose sum is σ = 7079460004848. Its totient is φ = 591109509120.

The previous prime is 2216660663027. The next prime is 2216660663047. The reversal of 2216660663040 is 403660666122.

It is a junction number, because it is equal to n+sod(n) for n = 2216660662983 and 2216660663001.

It is not an unprimeable number, because it can be changed into a prime (2216660663047) 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, 288623851 + ... + 288631530.

Almost surely, 2^{2216660663040} is an apocalyptic number.

2216660663040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216660663040 is an abundant number, since it is smaller than the sum of its proper divisors (4862799341808).

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

2216660663040 is an equidigital number, since it uses as much as digits as its factorization.

2216660663040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577255405 (or 577255391 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 2216660663040 in words is "two trillion, two hundred sixteen billion, six hundred sixty million, six hundred sixty-three thousand, forty".