2216780835840 has 528 divisors, whose sum is σ = 8096432940960. Its totient is φ = 581430804480.

The previous prime is 2216780835821. The next prime is 2216780835859. The reversal of 2216780835840 is 485380876122.

2216780835840 is a `hidden beast` number, since 2 + 216 + 78 + 0 + 8 + 358 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2216780835821) and next prime (2216780835859).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75879156 + ... + 75908364.

Almost surely, 2^{2216780835840} is an apocalyptic number.

2216780835840 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 2216780835840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4048216470480).

2216780835840 is an abundant number, since it is smaller than the sum of its proper divisors (5879652105120).

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

2216780835840 is an equidigital number, since it uses as much as digits as its factorization.

2216780835840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29310 (or 29280 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 2216780835840 in words is "two trillion, two hundred sixteen billion, seven hundred eighty million, eight hundred thirty-five thousand, eight hundred forty".