2204243345540 has 96 divisors (see below), whose sum is σ = 4925147552640. Its totient is φ = 826288128000.

The previous prime is 2204243345449. The next prime is 2204243345543. The reversal of 2204243345540 is 455433424022.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 2204243345494 and 2204243345503.

It is not an unprimeable number, because it can be changed into a prime (2204243345543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44227235 + ... + 44277045.

It is an arithmetic number, because the mean of its divisors is an integer number (51303620340).

Almost surely, 2^{2204243345540} is an apocalyptic number.

2204243345540 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 2204243345540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2462573776320).

2204243345540 is an abundant number, since it is smaller than the sum of its proper divisors (2720904207100).

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

2204243345540 is a wasteful number, since it uses less digits than its factorization.

2204243345540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51093 (or 51091 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 38.

Adding to 2204243345540 its reverse (455433424022), we get a palindrome (2659676769562).

The spelling of 2204243345540 in words is "two trillion, two hundred four billion, two hundred forty-three million, three hundred forty-five thousand, five hundred forty".