2166223356336 has 80 divisors (see below), whose sum is σ = 6040928355840. Its totient is φ = 664939418880.

The previous prime is 2166223356329. The next prime is 2166223356359. The reversal of 2166223356336 is 6336533226612.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3881160 + ... + 4404071.

It is an arithmetic number, because the mean of its divisors is an integer number (75511604448).

Almost surely, 2^{2166223356336} is an apocalyptic number.

2166223356336 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2166223356336 is an abundant number, since it is smaller than the sum of its proper divisors (3874704999504).

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

2166223356336 is a wasteful number, since it uses less digits than its factorization.

2166223356336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8285674 (or 8285668 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 48.

The spelling of 2166223356336 in words is "two trillion, one hundred sixty-six billion, two hundred twenty-three million, three hundred fifty-six thousand, three hundred thirty-six".