204240310512 has 80 divisors (see below), whose sum is σ = 623788170240. Its totient is φ = 56342151936.

The previous prime is 204240310507. The next prime is 204240310531. The reversal of 204240310512 is 215013042402.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 10470568 + ... + 10490055.

It is an arithmetic number, because the mean of its divisors is an integer number (7797352128).

Almost surely, 2^204240310512 is an apocalyptic number.

It is an amenable number.

204240310512 is an abundant number, since it is smaller than the sum of its proper divisors (419547859728).

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

204240310512 is a wasteful number, since it uses less digits than its factorization.

204240310512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20960670 (or 20960664 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 204240310512 its reverse (215013042402), we get a palindrome (419253352914).

The spelling of 204240310512 in words is "two hundred four billion, two hundred forty million, three hundred ten thousand, five hundred twelve".