204311220140440 has 48 divisors (see below), whose sum is σ = 534753346597200. Its totient is φ = 70049561190336.

The previous prime is 204311220140431. The next prime is 204311220140459. The reversal of 204311220140440 is 44041022113402.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 204311220140399 and 204311220140408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52120207260 + ... + 52120211179.

It is an arithmetic number, because the mean of its divisors is an integer number (11140694720775).

Almost surely, 2^{204311220140440} is an apocalyptic number.

204311220140440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204311220140440 is an abundant number, since it is smaller than the sum of its proper divisors (330442126456760).

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

204311220140440 is a wasteful number, since it uses less digits than its factorization.

204311220140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104240418464 (or 104240418453 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 204311220140440 its reverse (44041022113402), we get a palindrome (248352242253842).

The spelling of 204311220140440 in words is "two hundred four trillion, three hundred eleven billion, two hundred twenty million, one hundred forty thousand, four hundred forty".