2216654011872 has 60 divisors (see below), whose sum is σ = 6519117882816. Its totient is φ = 738884669760.

The previous prime is 2216654011861. The next prime is 2216654011883. The reversal of 2216654011872 is 2781104566122.

2216654011872 is a `hidden beast` number, since 2 + 2 + 1 + 6 + 65 + 401 + 187 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2216654011861) and next prime (2216654011883).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 427592704 + ... + 427597887.

Almost surely, 2^{2216654011872} is an apocalyptic number.

It is an amenable number.

2216654011872 is an abundant number, since it is smaller than the sum of its proper divisors (4302463870944).

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

2216654011872 is an equidigital number, since it uses as much as digits as its factorization.

2216654011872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855190613 (or 855190596 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

Adding to 2216654011872 its reverse (2781104566122), we get a palindrome (4997758577994).

The spelling of 2216654011872 in words is "two trillion, two hundred sixteen billion, six hundred fifty-four million, eleven thousand, eight hundred seventy-two".