2204285721840 has 160 divisors (see below), whose sum is σ = 7616955340800. Its totient is φ = 585919284480.

The previous prime is 2204285721773. The next prime is 2204285721901. The reversal of 2204285721840 is 481275824022.

2204285721840 is a `hidden beast` number, since 2 + 2 + 0 + 4 + 28 + 572 + 18 + 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 968920 + ... + 2312439.

It is an arithmetic number, because the mean of its divisors is an integer number (47605970880).

Almost surely, 2^{2204285721840} is an apocalyptic number.

2204285721840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2204285721840 is an abundant number, since it is smaller than the sum of its proper divisors (5412669618960).

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

2204285721840 is a wasteful number, since it uses less digits than its factorization.

2204285721840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281692 (or 3281680 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 45.

The spelling of 2204285721840 in words is "two trillion, two hundred four billion, two hundred eighty-five million, seven hundred twenty-one thousand, eight hundred forty".