222646564440 has 192 divisors, whose sum is σ = 764315735040. Its totient is φ = 56120843520.

The previous prime is 222646564433. The next prime is 222646564549. The reversal of 222646564440 is 44465646222.

222646564440 is a `hidden beast` number, since 2 + 2 + 2 + 6 + 46 + 564 + 4 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247899 + ... + 711861.

It is an arithmetic number, because the mean of its divisors is an integer number (3980811120).

Almost surely, 2^222646564440 is an apocalyptic number.

222646564440 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 222646564440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382157867520).

222646564440 is an abundant number, since it is smaller than the sum of its proper divisors (541669170600).

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

222646564440 is a wasteful number, since it uses less digits than its factorization.

222646564440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464054 (or 464047 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 45.

The spelling of 222646564440 in words is "two hundred twenty-two billion, six hundred forty-six million, five hundred sixty-four thousand, four hundred forty".