2223865335168 has 128 divisors (see below), whose sum is σ = 6571105689600. Its totient is φ = 740428485120.

The previous prime is 2223865335101. The next prime is 2223865335179. The reversal of 2223865335168 is 8615335683222.

2223865335168 is a `hidden beast` number, since 2 + 2 + 2 + 38 + 65 + 33 + 516 + 8 = 666.

It is a Cunningham number, because it is equal to 1491263²-1.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a congruent number.

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, 2609713 + ... + 3355343.

It is an arithmetic number, because the mean of its divisors is an integer number (51336763200).

Almost surely, 2^{2223865335168} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2223865335168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3285552844800).

2223865335168 is an abundant number, since it is smaller than the sum of its proper divisors (4347240354432).

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

2223865335168 is an equidigital number, since it uses as much as digits as its factorization.

2223865335168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746517 (or 746499 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 54.

The spelling of 2223865335168 in words is "two trillion, two hundred twenty-three billion, eight hundred sixty-five million, three hundred thirty-five thousand, one hundred sixty-eight".