204444220440 has 64 divisors (see below), whose sum is σ = 614230905600. Its totient is φ = 54438614912.

The previous prime is 204444220429. The next prime is 204444220469. The reversal of 204444220440 is 44022444402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 204444220398 and 204444220407.

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, 1165260 + ... + 1329179.

It is an arithmetic number, because the mean of its divisors is an integer number (9597357900).

Almost surely, 2^204444220440 is an apocalyptic number.

204444220440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204444220440 is an abundant number, since it is smaller than the sum of its proper divisors (409786685160).

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

204444220440 is a wasteful number, since it uses less digits than its factorization.

204444220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495136 (or 2495132 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 204444220440 its reverse (44022444402), we get a palindrome (248466664842).

The spelling of 204444220440 in words is "two hundred four billion, four hundred forty-four million, two hundred twenty thousand, four hundred forty".