204344264440 has 64 divisors (see below), whose sum is σ = 461089324800. Its totient is φ = 81504310272.

The previous prime is 204344264437. The next prime is 204344264441. The reversal of 204344264440 is 44462443402.

It is a self number, because there is not a number n which added to its sum of digits gives 204344264440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204344264441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23051449 + ... + 23060311.

It is an arithmetic number, because the mean of its divisors is an integer number (7204520700).

Almost surely, 2^204344264440 is an apocalyptic number.

204344264440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204344264440 is an abundant number, since it is smaller than the sum of its proper divisors (256745060360).

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

204344264440 is a wasteful number, since it uses less digits than its factorization.

204344264440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10456 (or 10452 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 37.

The spelling of 204344264440 in words is "two hundred four billion, three hundred forty-four million, two hundred sixty-four thousand, four hundred forty".